Vietnamese sign languages
hos – Ho Chi Minh City Sign Language
haf – Haiphong Sign Language
hab – Hanoi Sign Language
The three sign languages indigenous to Vietnam are found in Ho Chi Minh city, Hanoi, and Haiphong. They are part of a sign language area that includes indigenous sign languages of Laos and Thailand, though it is not known if they are related to each other. There is some influence from French Sign Language. There are attempts to develop a national standard language, Vietnamese Sign Language.
- Woodward, James (2000). Sign languages and sign language families in Thailand and Viet Nam, in Emmorey, Karen, and Harlan Lane, eds., The signs of language revisited : an anthology to honor Ursula Bellugi and Edward Klima. Mahwah, N.J.: Lawrence Erlbaum, p. 23-47
- Woodward, James; Thi Hoa, Nguyen; Tran Thuy Tien, Nguyen (2004). Providing higher educational opportunities in Deaf adults in Viet Nam through Vietnamese sign languages: 2000-2003. In: Deaf Worlds 20: 3 (2004) - pp. 232–263