DJVU PDF Diller, A. 1998, "The Tai language family and the comparative method", in The International Conference on Tai Studies, ed. S. Burusphat, Bangkok, Thailand, pp. 1-32. Institute of Language and Culture for Rural Development, Mahidol University. cite.

DJVU PDF Chamberlain, J.R. 1998, "The origin of Sek: implications for Tai and Vietnamese history", in The International Conference on Tai Studies, ed. S. Burusphat, Bangkok, Thailand, pp. 97-128. Institute of Language and Culture for Rural Development, Mahidol University. cite.