Ethnologue report on Chiang Mai Sign Language. See also: 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
