1 2 Ostapirat W. (2005). "Kra-dai and Austronesian: notes on phonological correspondences and vocabulary distribution." tr. 107–131 trong Sagart L., Blench R. & Sanchez-Mazas A. (chủ biên) The peopling of East Asia: putting together archaeology, linguistics and genetics. London/New York: Routledge-Curzon.
