DJVU PDF Van der haak, F. 1993, "Ta’uaih phonology and orthography: a preliminary statement", in The Mon-Khmer Studies Journal, vol. 22, pp. 257-264. cite.

DJVU PDF Van der haak, F. 1993, "Benefits of the Ethnolinguistic Mapping project of Ethnic Groups in Thailand", in The Mon-Khmer Studies Journal, vol. 23, pp. 155-157. cite.

DJVU PDF Van der haak, F. and Woykos, B. 1987-1988, "Kui dialect survey in Surin and Sisaket", in The Mon-Khmer Studies Journal, vol. 16-17, pp. 109-142. cite.