1. Gordon, R. G. Jr. Ethnologue: Languages of the World 15 edn (SIL International, Dallas, Texas,, 2005).
2. Fu, C. Z. Hainan Cun Language (South China University of Technology Press, Guangzhou, Guangdong, 1996).
3. Ouyang, J. Y. Studies of Cun Language (Shanghai Far East Press, Shanghai, 1998).
4. Li, D., Li, H., Ou, C., Lu, Y., Sun, Y., Yang, B. et al. Paternal genetic structure of Hainan aborigines isolated at the entrance to East Asia. PLoS ONE 3, e2168 (2008).
5. Burusphat, S. A comparison of general classifiers in Tai-Kadai languages. Mon-Khmer Studies: J. Southeast Asian Lang. Cultures 37, 129–153 (2007).