DJVU PDF Mazaudon, M. 1985, "Dzongkha number systems", in Southeast Asian Linguistic Studies Presented to André-G. Haudricourt, ed. S. Ratanakul et al., pp. 124-157. Institute of Language and Culture for Rural Development, Mahidol University. cite.

DJVU PDF Watters, S.A. 2002, "The sounds and tones of five Tibetan languages of the Himalayan region", in Linguistics of the Tibeto-Burman Area, vol. 25, no. 1, pp. 1-65. cite.