found: Work cat.: Xinh ca Cao Lan, 2003.
found: Ethnologue Web site, May 16, 2006(Cao Lan language spoken in China and Vietnam (mainly in Tuyen Quang, Bac Can and Thai Nguyen provinces). Alternate names: Caolan, San Chay, San Chi, "Man Cao-Lan", Sán-Chi, "Mán", Cao Lan-Sán Chi; "Man" is derogatory. Classification: Tai-Kadai, Kam-Tai, Be-Tai, Tai-Sek, Tai, Central)
found: LLow Web site, May 16, 2006(Man Cao Lan; alternative names: Cao Lan, Caolan, San Chay, San Chi, Man Cao-Lan, San-Chi, Man, Cao Lan-Chi)
found: Prayer profile : the Man Cao Lan of China, via WWW, (http://kcm.co.kr/bethany%5Feng/p%5Fcode2/314.html) May 18, 2006(Although the majority of Man Cao Lan live in northern Vietnam, about 36,000 live in the adjacent region of the southern Chinese province of Yunnan. The Man Cao Lan are also known as the San Chay. They speak Man Cao Lan, which is closely related to the Thai language.)