Krissana Yodmongkhon. 1986. The phonological study of Northern Khmer (Prakhonchai district, Buriram province). Faculty of Graduate Studies, Mahidol University;
Krissana Yodmongkhon. (1986) The phonological study of Northern Khmer (Prakhonchai district, Buriram province) . Mahidol University/Bangkok.
Krissana Yodmongkhon. The phonological study of Northern Khmer (Prakhonchai district, Buriram province). . Bangkok:Mahidol University, 1986.
Krissana Yodmongkhon. (1986) The phonological study of Northern Khmer (Prakhonchai district, Buriram province) . Mahidol University/Bangkok.