DJVU PDF Mazaudon, M. 1985, "Review of Hari and An investigation of the tones of Lhasa Tibetan", in Linguistics of the Tibeto-Burman Area, vol. 8, no. 1, pp. 91-99. cite.

DJVU PDF Sprigg, R.K. 1981, "The Chang-Shefts tonal analysis and and the pitch variation of the Lhasa Tibetan tones", in Linguistics of the Tibeto-Burman Area, vol. 6, no. 1, pp. 49-59. cite.