DJVU PDF Edmondson, J.A, Esling, J.H., Harris, J.G and Wei, J. 2004, "A phonetic study of the Sui consonants and vowels", in The Mon-Khmer Studies Journal, vol. 34, pp. 47-66. cite.
DJVU PDF Edmondson, J.A. 1998, "The language corridor: New evidence from Vietnam", in The International Conference on Tai Studies, ed. S. Burusphat, Bangkok, Thailand, pp. 129-150. Institute of Language and Culture for Rural Development, Mahidol University. cite.
DJVU PDF Oshike, B.T. 1979, "The Kam-Sui-Mak and Northern Tai Languages", in Papers in Southeast Asian Linguistics No.6, Tai Studies in Honor of William J. Gedney, ed. T.W. Gething and N.D. Liem, vol. 6, pp. 125-142. Pacific Linguistics, the Australian National University. cite.