DJVU PDF Li Fang-Kuei. 1992, "The Tai Languages", in Papers on Tai languages, Linguistics, and Literatures, ed. C.J. Compton and J.F. Hartmann, pp. 1-4. Center for Southeast Asian Studies, Northern Illinois University. cite.

DJVU PDF Li, F.-K. 1989, "Proto-Tai *kh and *x-", in South-east Asian Linguisitics: Essays in Honour of Eugénie J.A. Henderson, ed. J.H.C.S. Davidson, pp. 143-146. School of Oriental and African Studies, University of London. cite.

DJVU PDF Fang Kuei Li. 1975, "Some words for Thai dialectology", in Studies in Tai Linguistics in Honor of William J. Gedney, ed. J.G. Harris and J.R. Chamberlain, pp. 271-273. Central Institute of English Language. cite.

DJVU PDF Li, F.-K. 1966, "The relationship between tones and initials in Tai", in Studies in Comparative Austroasiatic Linguistics, ed. N.H. Zide, pp. 82-88. Mouton & Co.. cite.