DJVU PDF Bee, P.J. 1987, "Factors and their functions in Thai tonal analysis", in Lai Su Thai, Essays in Honour of E.H.S. Simmonds, ed. J.H.C.S. Davidson, pp. 11-40. School of Oriental and African Studies, University of London. cite.

DJVU PDF Bee, P. 1975, "Restricted phonology in certain Thai linker-syllables", in Studies in Tai Linguistics in Honor of William J. Gedney, ed. J.G. Harris and J.R. Chamberlain, pp. 17-32. Central Institute of English Language. cite.