Southeast Asian Studies, 1992. ISBN 1-877979-16-3 Gedney, William J., and Thomas J. Hudak. (1995). William J. Gedney's central Tai dialects: glossaries,
doi.org/10.11646/zootaxa.3815.1.3 Vinh Quang Luu, Thomas Ziegler, Nghia Van Ha, Minh Duc Le and Tuoi Thi Hoang. 2019. A New Species of Lycodon Boie, 1826