Yan, Qixiang 顏其香 and Zhizhi Zhou 周植志. 1995. 中國孟高棉語族語言與南亞語系 [The Mon-Khmer languages in China and Austro-Asiatic languages]. Beijing: Minzu University of China Press (中央民族大學出版社).
H. L. Shorto. 2013. Riang-Lang Vocabulary: Compiled from the materials collected by G. H. Luce. (Asia-Pacific Linguistics, 5.) Canberra: Asia-Pacific Linguistics. 195pp.
Michael Dunn, Niclas Burenhult, Nicole Kruspe, Sylvia Tufvesson, and Neele Becker. 2011. Aslian linguistic prehistory: A case study in computational phylogenetics. Diachronica 28:291-323.