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

Glottolog . http://www.glottolog.org/glottolog/

Dardic ( pp. 818-894 ) . Elena Bashir (2003) · In The Indo-Aryan Languages Routledge Language Family Series · edited by George Cardona and Dhanesh Jain · London & New York: Routledge

Languages of Chitral ( pp. xxii+257 ) . Decker, Kendall D. (1992) · Sociolinguistic Survey of Northern Pakistan · Vol. 5 · National Institute of Pakistan Studies, Quaid-i-Azam University and Summer Institute of Linguistics http://www-01.sil.org/sociolx/pubs/32850_SSNP05.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) ·

Die Sprache von Sau in Ostafghanistan . Buddruss, Georg (1967) · J. Kitzinger