DJVU PDF Brunelle, M. 2005, "Register and tone in Eastern Cham: evidence from a word game", in The Mon-Khmer Studies Journal, vol. 35, pp. 121-131. cite.

DJVU PDF Phu Van Han, Edmondson, J.A and Gregerson, K. 1992, "Eastern Cham as a tone language", in The Mon-Khmer Studies Journal, vol. 20, pp. 31-44. cite.