DJVU PDF Edmondson, J.A. 1992, "A study of the tones and initials in Kam, Lakkja, and Hlai", in Papers on Tai languages, Linguistics, and Literatures, ed. C.J. Compton and J.F. Hartmann, pp. 77-102. Center for Southeast Asian Studies, Northern Illinois University. cite.
DJVU PDF Haudricourt, A.G. 1989, "La tonologie du Li de Hainan", in South-east Asian Linguisitics: Essays in Honour of Eugénie J.A. Henderson, ed. J.H.C.S. Davidson, pp. 133-142. School of Oriental and African Studies, University of London. cite.
DJVU PDF Kosaka, R. 2007, "Consonantal lenition and vocalic transfer in Kadai languages: with disyllabic proto-Be-Tai as supporting evidence", in SEALS XIII Papers from the 13th Annual Meeting of the Southeast Asian Linguistics Society 2003, ed. I. Shoichi et al., Canberra, Australia, pp. 93-103. Pacific Linguistics, Research School of Pacific and Asian Studies, The Australian National University. cite.
DJVU PDF Theraphan L-Thongkum. 2001, "The Tai-Kadai peoples of Hainan Island and their languages", in Essays in Tai Linguistics, ed. M.R. Kalaya Tingsabadh and A.S. Abramson, pp. 189-204. Chulalongkorn University Press. cite.
DJVU PDF Thurgood, G. 1992, "The aberrancy of the Jiamo dialect of Hlai: speculation on its origins and history", in Papers from the First Annual Meeting of the Southeast Asian Linguistics Society, ed. M. Ratliff and E. Schiller, pp. 417-433. Arizona State University, Program for Southeast Asian Studies. cite.
DJVU PDF Weera Ostapirat. 1993, "Evidence of Hlai dental and velar clusters from Savina’s Đày variety", in The Mon-Khmer Studies Journal, vol. 23, pp. 133-137. cite.