Endangered Languages Catalogue Project. Compiled by research teams at University of Hawai'i Mānoa and Institute for Language Information and Technology (LINGUIST List) at Eastern Michigan University . (2012) ·

South Asia and the Middle East ( pp. 283-348 ) . George van Driem (2007) · In Encyclopedia of the World's Endangered Languages edited by Christopher Moseley · London & New York: Routledge

Atlas of the World’s Languages in Danger . Christopher Moseley (ed.) (2010) · UNESCO Publishing http://www.unesco.org/culture/en/endangeredlanguages/atlas

Hen Kha: A Dialect of mangde Valley in Bhutan ( pp. 69-86 ) . Jagar Dorji (2011) · Journal of Bhutan Studies. 24 (Summer 2011) http://www.bhutanstudies.org.bt/publicationFiles/JBS/JBS_Vol24/24-4.pdf

A Preliminary Report on Mandebi-kha ( pp. 63-74 ) . Nishida, Fuminobu (2009) · The Journal of Humanities (Chiba University). 38 http://mitizane.ll.chiba-u.jp/metadb/up/irwg10/Jinbun38-08.pdf

Mangde in Bhutan ( pp. 77-87 ) . Nishida, Fuminobu (2011) · Annual research report on general education, Akita University (秋田大学教養基礎教育研究年報). 14 http://air.lib.akita-u.ac.jp/dspace/bitstream/10295/1942/1/kkiso14%2877%29.pdf