Language education may take place as a general school subject, in a specialized language school, or out of school with a rich selection of proprietary methods online and in books, CDs and DVDs. There are many methods of teaching languages. Some have fallen into relative obscurity and others are widely used; still others have a small following, but offer useful insights.
There are three principal views:
- The structural view treats language as a system of structurally related elements to code meaning (e.g. grammar).
- The functional view sees language as a vehicle to express or accomplish a certain function, such as requesting something.
- The interactive view sees language as a vehicle for the creation and maintenance of social relations, focusing on patterns of moves, acts, negotiation and interaction found in conversational exchanges. This view has been fairly dominant since the 1980s.
- 1 Methodology
- 2 Approach, method and technique
- 3 Approach, design and procedure
- 4 Structural methods
- 5 Functional methods
- 6 Interactive methods
- 6.1 Direct method
- 6.2 The series method
- 6.3 Communicative language teaching
- 6.4 Language immersion
- 6.5 Silent Way
- 6.6 Community language learning
- 6.7 Suggestopedia
- 6.8 Natural approach
- 6.9 Total physical response
- 6.10 Teaching Proficiency through Reading and Storytelling
- 6.11 Dogme language teaching
- 7 Proprietary methods
- 8 Other
- 9 See also
- 10 Notes
- 11 References
- 12 Further reading
In the late 1800s and most of the 1900s, language teaching was usually conceived in terms of method. In seeking to improve teaching practices, teachers and researchers would typically try to find out which method was the most effective. However, method is an ambiguous concept in language teaching, and has been used in many different ways. According to Bell, this variety in use "offers a challenge for anyone wishing to enter into the analysis or deconstruction of methods".
Approach, method and technique
In 1963, University of Michigan Linguistics Professor Edward Mason Anthony Jr. formulated a framework to describe various language teaching methods, which consisted of three levels: approach, method, and technique. According to Anthony, "The arrangement is hierarchical. The organizational key is that techniques carry out a method which is consistent with an approach." His concept of approach was of a set of principles or ideas about the nature of language learning which would be consistent over time; "an approach is axiomatic". His method was more procedural; "an overall plan for the orderly presentation of language material, no part of which contradicts, and all of which is based upon, the selected approach." Finally, his concept of technique referred to the actual implementation in the language classroom; "a particular trick, stratagem, or contrivance used to accomplish an immediate objective." He saw techniques as being consistent with a given method and by extension, with a given approach.
A method is a plan for presenting the language material to be learned and should be based upon a selected approach. In order for an approach to be translated into a method, an instructional system must be designed considering the objectives of the teaching/learning, how the content is to be selected and organized, the types of tasks to be performed, the roles of students and the roles of teachers. A technique is a very specific, concrete stratagem or trick designed to accomplish an immediate objective. Such are derived from the controlling method, and less-directly, with the approach.
Anthony's framework was welcomed by the language teaching community when it was introduced, and it was seen as a useful way of classifying different teaching practices. However, it did not clearly define the difference between approach, method, and technique, and Kumaravadivelu reports that due to this ambiguity there was "widespread dissatisfaction" with it. Anthony himself recognized the limitations of his framework, and was open to the idea of improvements being made to it.
Approach, design and procedure
Richards and Rogers' 1982 approach expanded on Anthony's three-level framework; however, instead of approach, method and technique, they chose the terms approach, design, and procedure. Their concept of approach was similar to Anthony's, but their design and procedure were of broader scope than Anthony's method and technique. Their design referred to all major practical implications in the classroom, such as syllabus design, types of activities to be used in the classroom, and student and teacher roles; procedure referred to different behaviors, practices and techniques observed in the classroom. These new terms were intended to address limitations in Anthony's framework, and also gave them specific criteria by which they could evaluate different "methods". This evaluation process was a key way that their formulation differed from Anthony's, as Anthony's framework was intended as purely descriptive.
Despite Richards and Rogers' efforts to clearly define approach, design, and procedure, their framework has been criticized by Kumaravadivelu for having "an element of artificiality in its conception and an element of subjectivity in its operation". Kumaravadivelu also points to similar objections raised by Pennyworth and by the Routledge Encyclopedia of Language Teaching and Learning. Brown also questions the suitability of Richards and Rogers' term design; he points out that in English teaching design is usually used to refer specifically to curriculum design, rather than the broad definition Richards and Rogers used. Most current teacher training manuals favor the terms approach, method, and technique.
The grammar translation method instructs students in grammar, and provides vocabulary with direct translations to memorize. It was the predominant method in Europe in the 19th century. Most instructors now acknowledge that this method is ineffective by itself. It is now most commonly used in the traditional instruction of the classical languages, however it remains the most commonly practiced method of English teaching in Japan.
At school, the teaching of grammar consists of a process of training in the rules of a language which must make it possible to all the students to correctly express their opinion, to understand the remarks which are addressed to them and to analyze the texts which they read. The objective is that by the time they leave college, the pupil controls the tools of the language which are the vocabulary, grammar and the orthography, to be able to read, understand and write texts in various contexts. The teaching of grammar examines texts, and develops awareness that language constitutes a system which can be analyzed. This knowledge is acquired gradually, by traversing the facts of language and the syntactic mechanisms, going from simplest to the most complex. The exercises according to the program of the course must untiringly be practiced to allow the assimilation of the rules stated in the course. That supposes that the teacher corrects the exercises. The pupil can follow his progress in practicing the language by comparing his results. Thus can he adapt the grammatical rules and control little by little the internal logic of the syntactic system. The grammatical analysis of sentences constitutes the objective of the teaching of grammar at the school. Its practice makes it possible to recognize a text as a coherent whole and conditions the training of a foreign language. Grammatical terminology serves this objective. Grammar makes it possible for each one to understand how the mother tongue functions, in order to give him the capacity to communicate its thought.
The audio-lingual method was developed in the United States around World War II when governments realized that they needed more people who could conduct conversations fluently in a variety of languages, work as interpreters, code-room assistants, and translators. However, since foreign language instruction in that country was heavily focused on reading instruction, no textbooks, other materials or courses existed at the time, so new methods and materials had to be devised. For example, the U.S. Army Specialized Training Program created intensive programs based on the techniques Leonard Bloomfield and other linguists devised for Native American languages, where students interacted intensively with native speakers and a linguist in guided conversations designed to decode its basic grammar and learn the vocabulary. This "informant method" had great success with its small class sizes and motivated learners.
The U.S. Army Specialized Training Program only lasted a few years, but it gained a lot of attention from the popular press and the academic community. Charles C. Fries set up the first English Language Institute at the University of Michigan, to train English as a second or foreign language teachers. Similar programs were created later at Georgetown University, University of Texas among others based on the methods and techniques used by the military. The developing method had much in common with the British oral approach although the two developed independently. The main difference was the developing audio-lingual methods allegiance to structural linguistics, focusing on grammar and contrastive analysis to find differences between the student's native language and the target language in order to prepare specific materials to address potential problems. These materials strongly emphasized drill as a way to avoid or eliminate these problems.
This first version of the method was originally called the oral method, the aural-oral method or the structural approach. The audio-lingual method truly began to take shape near the end of the 1950s, this time due government pressure resulting from the space race. Courses and techniques were redesigned to add insights from behaviorist psychology to the structural linguistics and constructive analysis already being used. Under this method, students listen to or view recordings of language models acting in situations. Students practice with a variety of drills, and the instructor emphasizes the use of the target language at all times. The idea is that by reinforcing 'correct' behaviors, students will make them into habits.
The typical structure of a chapter employing the Audio-Lingual-Method (ALM—and there was even a text book entitled ALM ) was usually standardized as follows: 1. First item was a dialog in the foreign language (FL) to be memorized by the student. The teacher would go over it the day before. 2. There were then questions in the FL about the dialog to be answered by the student(s) in the target language. 3. Often a brief introduction to the grammar of the chapter was next, including the verb(s) and conjugations. 4. The mainstay of the chapter was "pattern practice," which were drills expecting "automatic" responses from the student(s) as a noun, verb conjugation, or agreeing adjective was to be inserted in the blank in the text (or during the teacher's pause). The teacher could have the student use the book or not use it, relative to how homework was assigned. Depending on time, the class could respond as a chorus, or the teacher could pick individuals to respond. It was really a sort of "mimicry-memorization." And it was "Julian Dakin in 'The Language Laboratory and Language Learning' (Longman 1973) who coined the phrase 'meaningless drills' to describe pattern practice of the kind inspired by the above ideas." 5. There was a vocabulary list, sometimes with translations to the mother tongue. 6. The chapter usually ended with a short reading exercise.
Due to weaknesses in performance, and more importantly because of Noam Chomsky's theoretical attack on language learning as a set of habits, audio-lingual methods are rarely the primary method of instruction today. However, elements of the method still survive in many textbooks.
The oral approach and situational language teaching
The oral approach was developed from the 1930s to the 1960s by British applied linguists such as Harold Palmer and A.S. Hornsby. They were familiar with the direct method as well as the work of 19th-century applied linguists such as Otto Jespersen and Daniel Jones but attempted to formally develop a more scientifically founded approach to teaching English than was evidenced by the direct method.
A number of large-scale investigations about language learning and the increased emphasis on reading skills in the 1920s led to the notion of "vocabulary control". It was discovered that languages have a core basic vocabulary of about 2,000 words that occur frequently in written texts, and it was assumed that mastery of these would greatly aid reading comprehension. Parallel to this was the notion of "grammar control", emphasizing the sentence patterns most-commonly found in spoken conversation. Such patterns were incorporated into dictionaries and handbooks for students. The principal difference between the oral approach and the direct method was that methods devised under this approach would have theoretical principles guiding the selection of content, gradation of difficulty of exercises and the presentation of such material and exercises. The main proposed benefit was that such theoretically based organization of content would result in a less-confusing sequence of learning events with better contextualization of the vocabulary and grammatical patterns presented. Last but not least, all language points were to be presented in "situations". Emphasis on this point led to the approach's second name. Proponents claim that this approach leads to students' acquiring good habits to be repeated in their corresponding situations. Teaching methods stress PPP (presentation (introduction of new material in context), practice (a controlled practice phase) and production (activities designed for less-controlled practice)).
Although this approach is all but unknown among language teachers today, elements of it have had long-lasting effects on language teaching, being the basis of many widely used English as a Second/Foreign Language textbooks as late as the 1980s and elements of it still appear in current texts. Many of the structural elements of this approach were called into question in the 1960s, causing modifications of this method that led to communicative language teaching. However, its emphasis on oral practice, grammar and sentence patterns still finds widespread support among language teachers and remains popular in countries where foreign language syllabuses are still heavily based on grammar.
Directed practice has students repeat phrases. This method is used by U.S. diplomatic courses. It can quickly provide a phrasebook-type knowledge of the language. Within these limits, the student's usage is accurate and precise. However the student's choice of what to say is not flexible.
The direct method, sometimes also called natural method, is a method that refrains from using the learners' native language and just uses the target language. It was established in Germany and France around 1900 and is best represented by the methods devised by Berlitz and de Sauzé, although neither claims originality and it has been re-invented under other names. The direct method operates on the idea that second language learning must be an imitation of first language learning, as this is the natural way humans learn any language: a child never relies on another language to learn its first language, and thus the mother tongue is not necessary to learn a foreign language. This method places great stress on correct pronunciation and the target language from outset. It advocates teaching of oral skills at the expense of every traditional aim of language teaching. Such methods rely on directly representing an experience into a linguistic construct rather than relying on abstractions like mimicry, translation and memorizing grammar rules and vocabulary.
According to this method, printed language and text must be kept away from second language learners for as long as possible, just as a first language learner does not use printed words until he has good grasp of speech. Learning of writing and spelling should be delayed until after the printed word has been introduced, and grammar and translation should also be avoided because this would involve the application of the learner's first language. All above items must be avoided because they hinder the acquisition of a good oral proficiency.
The method relies on a step-by-step progression based on question-and-answer sessions which begin with naming common objects such as doors, pencils, floors, etc. It provides a motivating start as the learner begins using a foreign language almost immediately. Lessons progress to verb forms and other grammatical structures with the goal of learning about thirty new words per lesson.
The series method
In the 19th century, François Gouin went to Hamburg to learn German. Based on his experience as a Latin teacher, he thought the best way to do this would be memorize a German grammar book and a table of its 248 irregular verbs. However, when he went to the academy to test his new language skills, he was disappointed to find out that he could not understand anything. Trying again, he similarly memorized the 800 root words of the language as well as re-memorizing the grammar and verb forms. However, the results were the same. During this time, he had isolated himself from people around him, so he tried to learn by listening, imitating and conversing with the Germans around him, but found that his carefully constructed sentences often caused native German speakers to laugh. Again he tried a more classical approach, translation, and even memorizing the entire dictionary but had no better luck.
When he returned home, he found that his three-year-old nephew had learned to speak French. He noticed the boy was very curious and upon his first visit to a mill, he wanted to see everything and be told the name of everything. After digesting the experience silently, he then reenacted his experiences in play, talking about what he learned to whoever would listen or to himself. Gouin decided that language learning was a matter of transforming perceptions into conceptions, using language to represent what one experiences. Language is not an arbitrary set of conventions but a way of thinking and representing the world to oneself. It is not a conditioning process, but one in which the learner actively organizes his perceptions into linguistics concepts.
The series method is a variety of the direct method in that experiences are directly connected to the target language. Gouin felt that such direct "translation" of experience into words, makes for a "living language". (p59) Gouin also noticed that children organize concepts in succession of time, relating a sequence of concepts in the same order. Gouin suggested that students learn a language more quickly and retain it better if it is presented through a chronological sequence of events. Students learn sentences based on an action such as leaving a house in the order in which such would be performed. Gouin found that if the series of sentences are shuffled, their memorization becomes nearly impossible. For this, Gouin preceded psycholinguistic theory of the 20th century. He found that people will memorize events in a logical sequence, even if they are not presented in that order. He also discovered a second insight into memory called "incubation". Linguistic concepts take time to settle in the memory. The learner must use the new concepts frequently after presentation, either by thinking or by speaking, in order to master them. His last crucial observation was that language was learned in sentences with the verb as the most crucial component. Gouin would write a series in two columns: one with the complete sentences and the other with only the verb. With only the verb elements visible, he would have students recite the sequence of actions in full sentences of no more than twenty-five sentences. Another exercise involved having the teacher solicit a sequence of sentences by basically ask him/her what s/he would do next. While Gouin believed that language was rule-governed, he did not believe it should be explicitly taught.
His course was organized on elements of human society and the natural world. He estimated that a language could be learned with 800 to 900 hours of instruction over a series of 4000 exercises and no homework. The idea was that each of the exercises would force the student to think about the vocabulary in terms of its relationship with the natural world. While there is evidence that the method can work extremely well, it has some serious flaws. One of which is the teaching of subjective language, where the students must make judgments about what is experienced in the world (e.g. "bad" and "good") as such do not relate easily to one single common experience. However, the real weakness is that the method is entirely based on one experience of a three-year-old. Gouin did not observe the child's earlier language development such as naming (where only nouns are learned) or the role that stories have in human language development. What distinguishes the series method from the direct method is that vocabulary must be learned by translation from the native language, at least in the beginning.
Communicative language teaching
Communicative language teaching (CLT), also known as the Communicative Approach, emphasizes interaction as both the means and the ultimate goal of learning a language. Despite a number of criticisms it continues to be popular, particularly in Europe, where constructivist views on language learning and education in general dominate academic discourse. Although the 'Communicative Language Teaching' is not so much a method on its own as it is an approach.
In recent years, task-based language learning (TBLL), also known as task-based language teaching (TBLT) or task-based instruction (TBI), has grown steadily in popularity. TBLL is a further refinement of the CLT approach, emphasizing the successful completion of tasks as both the organizing feature and the basis for assessment of language instruction. Dogme language teaching shares a philosophy with TBL, although differs in approach. Dogme is a communicative approach, and encourages teaching without published textbooks and instead focusing on conversational communication among the learners and the teacher.
Language immersion in school contexts delivers academic content through the medium of a foreign language, providing support for L2 learning and first language maintenance. There are three main types of immersion education programs in the United States: foreign language immersion, dual immersion, and indigenous immersion.
Foreign language immersion programs in the U.S. are designed for students whose home language is English. In the early immersion model, for all or part of the school day elementary school children receive their content (academic) instruction through the medium of another language: Spanish, French, German, Chinese, Japanese, etc. In early total immersion models, children receive all the regular kindergarten and first grade content through the medium of the immersion language; English reading is introduced later, often in the second grade. Most content (math, science, social studies, art, music) continues to be taught through the immersion language. In early partial immersion models, part of the school day (usually 50%) delivers content through the immersion language, and part delivers it through English. French-language immersion programs are common in Canada in the provincial school systems, as part of the drive towards bilingualism and are increasing in number in the United States in public school systems (Curtain & Dahlbert, 2004). Branaman & Rhodes (1998) report that between 1987 and 1997 the percentage of elementary programs offering foreign language education in the U.S. through immersion grew from 2% to 8% and Curtain & Dahlberg (2004) report 278 foreign language immersion programs in 29 states. Research by Swain and others (Genesee 1987) demonstrate much higher levels of proficiency achieved by children in foreign language immersion programs than in traditional foreign language education elementary school models.
Dual immersion programs in the U.S. are designed for students whose home language is English as well as for students whose home language is the immersion language (usually Spanish). The goal is bilingual students with mastery of both English and the immersion language. As in partial foreign language immersion academic content is delivered through the medium of the immersion language for part of the school day, and through English the rest of the school day.
Indigenous immersion programs in the U.S. are designed for American Indian communities desiring to maintain the use of the native language by delivering elementary school content through the medium of that language. Hawaiian Immersion programs are the largest and most successful in this category.
The Silent Way is a discovery learning approach, invented by Caleb Gattegno in the late 1950s. The teacher is largely silent, giving more space for the students to explore the language. Students are responsible for their own learning and are encouraged to express themselves; beginners talk about what they see, more advanced students talk about their lives and what they think. The role of the teacher is not to model the language but to correct mistakes by giving sensitive feedback. With respect to teaching pronunciation, the Silent Way is a good example of the Articulatory Approach.
Community language learning
The community language learning (CLL) is a method proposed by Charles A. Curran during the 1970s. It is based on the counseling approach in which the teacher is seen as a counselor. It emphasizes the sense of community in the learning group, encourages interaction as a vital aspect of learning, and it considers as a priority the students' feelings and the recognition of struggles in language acquisition. There is no syllabus or textbook to follow and it is the students themselves who determine the content of the lesson. Notably, it incorporates translation and recording techniques.
Suggestopedia was a method that experienced popularity especially in past years, with both staunch supporters and very strong critics, some claiming it is based on pseudoscience.
The natural approach is a language teaching method developed by Stephen Krashen and Tracy D. Terrell. They emphasise the learner receiving large amounts of comprehensible input. The Natural Approach can be categorized as part of the comprehension approach to language teaching.
Total physical response
In total physical response (TPR), the instructor gives the students commands in the target language and the students act those commands out using whole-body responses. This can be categorized as part of the comprehension approach to language teaching.
Teaching Proficiency through Reading and Storytelling
Teaching Proficiency through Reading and Storytelling (TPR Storytelling or TPRS) was developed by Blaine Ray, a language teacher in California, in the 1990s. At first it was an offshoot of Total Physical Response that also included storytelling, but it has evolved into a method in its own right and has gained a large following among teachers, particularly in the United States. TPR Storytelling can be categorized as part of the comprehension approach to language teaching.
Dogme language teaching
Dogme language teaching is considered to be both a methodology and a movement. Dogme is a communicative approach to language teaching and encourages teaching without published textbooks and instead focusing on conversational communication among the learners and the teacher. It has its roots in an article by the language education author, Scott Thornbury. The Dogme approach is also referred to as “Dogme ELT”, which reflects its origins in the ELT (English language teaching) sector. Although Dogme language teaching gained its name from an analogy with the Dogme 95 film movement (initiated by Lars von Trier), the connection is not considered close.
Some methods are tied to a particular company or school, and are not used in mainstream teaching. Besides those mentioned below, there are dozens of competitors, each slightly different. Notable are the computer courses which use speech recognition to give feedback on pronunciation.
Pimsleur language learning system is based on the research of and model programs developed by American language teacher Paul Pimsleur. It involves recorded 30-minute lessons to be done daily, with each lesson typically featuring a dialog, revision, and new material. Students are asked to translate phrases into the target language, and occasionally to respond in the target language to lines spoken in the target language. The instruction starts in the student's language but gradually changes to the target language. Several all-audio programs now exist to teach various languages using the Pimsleur Method. The syllabus is the same in all languages.
Michel Thomas Method
Michel Thomas Method is an audio-based teaching system developed by Michel Thomas, a language teacher in the USA. It was originally done in person, although since his death it is done via recorded lessons. The instruction is done entirely in the student's own language, although the student's responses are always expected to be in the target language. The method focuses on constructing long sentences with correct grammar and building student confidence. There is no listening practice, and there is no reading or writing. The syllabus is ordered around the easiest and most useful features of the language, and as such is different for each language.
Computer Assisted Language Learning (CALL) is a method that includes a combination of methods and techniques using the resources available on the internet, as well as a variety of language learning software.
There is a lot of language learning software using the multimedia capabilities of computers.
Learning by teaching (LdL)
- Richards, Jack C.; Theodore S. Rodgers (2001). Approaches and Methods in Language Teaching. Cambridge UK: Cambridge University Press. ISBN 0-521-00843-3.
- Anthony 1963, pp. 63–67, cited in Richards & Rogers 2001, p. 19.
- Hall 2011, p. 57.
- Bell 2003, p. 326, cited in Hall 2011, p. 76
- Richards & Rodgers 2001, p. 19.
- Kumaravadivelu 2006, p. 85.
- Johnson & Johnson 1999.
- Kumaravadivelu 2006, p. 86.
- Kumaravadivelu 2006, p. 88.
- Kumaravadivelu 2006, p. 87.
- Brown 2001, cited in Hall 2011, p. 77.
- Hall 2011, p. 77.
- Universiteit Antwerpen James L. Barker lecture on November 8, 2001 at Brigham Young University, given by Wilfried Decoo.
- Diller, Karl Conrad (1978). The Language Teaching Controversy. Rowley, Massachusetts: Newbury House. ISBN 0883771144.
- van Hattum, Ton (2006), The Communicative Approach Rethought
- Meddings, L and Thornbury, S (2009) Teaching Unplugged: Dogme in English Language Teaching. Peaslake: Delta.
- Luke, Meddings (26 March 2004). "Throw away your textbooks". The Guardian. Retrieved 22 June 2009.
- Kho, Mu-Jeong (2016). How to Implant a Semiotic and Mathematical DNA into Learning English, Seoul: Booklab Publishing Co. ISBN 979-11-87300-04-5 (53740), 261 pages.
- "Find better language courses: Impartial reviews of 70 self-study programs". globe1234.com. Retrieved 2013-08-23.
- "Scoring Your Pronunciation". globe1234.com. Retrieved 2013-08-23.
- Michel Thomas: The Learning Revolution, by Jonathan Solity.
- E. ter Horst and J. M. Pearce, “Foreign Languages and the Environment: A Collaborative Instructional Project”, The Language Educator, pp. 52-56, October, 2008.
- J. M. Pearce and E. ter Horst “Appropedia and Sustainable Development for Improved Service Learning”, Proceedings of Association for the Advancement of Sustainability in Higher Education 2008.
- Joshua M. Pearce and Eleanor ter Horst, “Overcoming Language Challenges of Open Source Appropriate Technology for Sustainable Development in Africa”, Journal of Sustainable Development in Africa, 11(3) pp.230-245, 2010.
- Levy M. (1997) CALL: context and conceptualisation, Oxford: Oxford University Press.
- Anthony, E. M. (1963). "Approach, Method, and Technique". ELT Journal (2): 63–43. doi:10.1093/elt/XVII.2.63.
- Bell, David (2003). "Method and Postmethod: Are They Really So Incompatible?" (PDF). TESOL Quarterly. 37 (2): 315–328. doi:10.2307/3588507. Retrieved February 7, 2012.
- Brown, H. (2001). Teaching by Principles: An Interactive Approach to Language Pedagogy (2nd ed.). White Plains, NY: Longman. ISBN 978-0-13-028283-5.
- Hall, Graham (2011). Exploring English Language Teaching: Language in Action. London, New York: Routledge. ISBN 978-0-415-58415-9.
- Johnson, Keith; Johnson, Helen, eds. (1999). "Approach". Encyclopedic Dictionary of Applied Linguistics: A Handbook for Language Teaching. Oxford: Blackwell Publishers. ISBN 978-0-631-22767-0.
- Kumaravadivelu, B. (2006). Understanding Language Teaching. Hillsdale: Lawrence Erlbaum. ISBN 978-0-8058-5176-2.
- Richards, Jack; Rodgers, Theodore (2001). Approaches and Methods in Language Teaching. Cambridge: Cambridge University Press. ISBN 978-0-521-00843-3.
- Kho, Mu-Jeong (2016). How to Implant a Semiotic and Mathematical DNA into Learning English. Seoul: Booklab Publishing Co. ISBN 979-11-87300-04-5.
- Irons, Glenwood H., compiler. Second Language Acquisition: Selected Readings in Theory and Practice. Welland, Ont.: Canadian Modern Language Review, 1988. ISBN 0-9691796-4-2