- Aris (1979). "Bhutan: The Early History of a Himalayan Kingdom", by Michael Aris (Warminster: Aris & Phillips, 1979).
- Petech (1972). "The Rulers of Bhutan c. 1650-1750," by Luciano Petech in Oriens Extremus, vol. 19 (1972), pp. 203-213.
- Tibetan and Himalayan Digital Library. THDL Extended Wylie Transliteration Scheme (web site). Last visited 12 May 2008.
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