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

Yaghnobi . Roland Bielmeier (2006) · In Encyclopaedia Iranica http://www.iranicaonline.org/articles/yaghnobi

Aspects of Yaghnobi Grammar . Brian Arnett Bird (2007) ·

The Ethnolinguistic Vitality of Yaghnobi . Daniel Paul and Elisabeth Abbess and Katja Müller and Calvin Tiessen and Gabriela Tiessen (2010) · http://www-01.sil.org/silesr/2010/silesr2010-017.pdf

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) ·

Sarmatisch, Alanisch, Jassisch und Altossetisch ( pp. 236-246 ) . Roland Bielmeier (1989) · In Compendium Linguarum Iranicarum edited by Rüdiger Schmitt · Dr. Ludwig Reichert

Jagnobskij jazyk. Osnovy iranskogo jazykoznanija, novoiranskije jazyki . Xromov, A. L. (1987) · Vostochnaja Gruppa Nauka