DJVU PDF Narumol Charoenma. 1982, "The phonologies of a Lampang Lamet and Wiang Papao Lua", in The Mon-Khmer Studies Journal, vol. 11, pp. 35-45. cite.

Narumol Charoenma 1980, "The sound systems of Lampanglamet and Wiangpapao Lua", Master thesis, Mahidol University. cite.