↑ Martha Ratliff, Hmong-Mien Language History, Pacific Linguistics, 2010, p. 254, n. 105.
↑ David Bradley, Proto-Tibeto-Burman Grain Crops, Rice, 4, 2011, pp. 134-141.
↑ Laurent Sagart, et al., Dated language phylogenies shed light on the ancestry of Sino-Tibetan. Proceedings of the National Academy of Sciences, 116, 2019.