Routledge Encyclopedia of Philosophy
The Routledge Encyclopedia of Philosophy is an encyclopedia of philosophy edited by Edward Craig that was first published by Routledge in 1998 (ISBN 978-0415073103). Originally published in both 10 volumes of print and as a CD-ROM, in 2002 it was made available online on a subscription basis. The online version is regularly updated with new articles and revisions to existing articles. It has 1,300 contributors providing over 2,000 scholarly articles.
Single-volume editions 
Two single-volume editions of the encyclopedia have been published, The Concise Routledge Encyclopedia of Philosophy, first published in 1999 (ISBN 978-0415223645), and The Shorter Routledge Encyclopedia of Philosophy, first published in 2005 (ISBN 978-0415324953). The Concise version has the same number of entries as the ten-volume set, each entry in the Concise version being the summary of the topic that precedes each article in the 10-volume work. The Shorter version has over 900 articles, each with more in depth coverage than the corresponding entry (if present) in the Concise encyclopedia.
See also 
- Background - Routledge Encyclopedia of Philosophy