Ethnologue: Languages of the World, 16th Edition (2009) . (2009) · edited by M. Paul Lewis · SIL International http://www.ethnologue.com/

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

World Oral Literature Project . http://www.oralliterature.org

The Red Book of the Peoples of the Russian Empire . (1993) · edited by Andrew Humphreys and Krista Mits · http://www.eki.ee/books/redbook

The World Atlas of Language Structures . (2005) · edited by Bernard Comrie and David Gil and Martin Haspelmath and Matthew S. Dryer · Oxford University Press

South Asia and the Middle East ( pp. 289-348 ch. 4 ) . George Van Driem (2007) · In Encyclopedia of the World's Endangered Languages edited by Christopher Mosely · London and NewYork: Routledge

Shughni ( pp. 787-824 ch. 14b ) . Edelman, D., and Leila R. Dodykhudoeva (2009) · In The Iranian Languages Routledge Language Family Series · edited by Gernot Windfuhr ·

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) ·

Shugni . Tetsuo Nawata (1979) · Asian and African Grammatical Manual No. 17 · Tokyo: Institute for the Study of Languages and Cultures of Asia and Africa, Tokyo University of Foreign Studies

Ethno-Cultural Heritage of the Peoples of West Pamir ( pp. 147-159 ) . Leila R. Dodykhudoeva (2004) · Coll. Antropol.. 28 (Suppl. 1) · https://www.academia.edu/2471705/Ethno-cultural_heritage_of_the_peoples_of_West_Pamir