Edmondson, Jerold A., Solnit, David B. (eds). 1997. Comparative Kadai: the Tai branch. Summer Institute of Linguistics and the University of Texas at Arlington Publications in Linguistics 124. Dallas: Summer Institute of Linguistics and the University of Texas at Arlington.
Văn Ma, Hoàng. The sound system of the Tày language of Cao Bắng Province, Vietnam. Jerold A. Edmondson and David B. Solnit (eds.), Comparative Kadai: The Tai branch: Dallas: Summer Institute of Linguistics and the University of Texas at Arlington. 1997.