DJVU PDF Raendchen, O. 1998, "The Tai /lak/: ritual and socio-political function", in The International Conference on Tai Studies, ed. S. Burusphat, Bangkok, Thailand, pp. 223-240. Institute of Language and Culture for Rural Development, Mahidol University. cite.

DJVU PDF Pranee Kullavanijaya and Theraphan L-Thongkum. 1998, "Linguistic criteria for determining Tai ethnic groups: Case studies on central and south-western Tais", in The International Conference on Tai Studies, ed. S. Burusphat, Bangkok, Thailand, pp. 273-298. Institute of Language and Culture for Rural Development, Mahidol University. cite.