DJVU PDF Smalley, W.A. 1997, "Early Protestant Missionaries and the Development of Thailand's Hierarchy of Multilingualism", in Southeast Asian Linguistics Studies In Honor of Vichin Panupong, ed. A.S. Abramson, pp. 237-252. Chulalongkorn University Press. cite.

DJVU PDF Smalley, W. 1973, "Bibliography of Khmu?", in The Mon-Khmer Studies Journal, vol. 4, pp. 23-32. cite.