DWIVEDI, Amitabh V. (2012) A Grammar of Hadoti, München: Lincom Europa.
GRENOBLE, A. Lenone & J. Lindsay WHALEY (2006) Saving languages: An introduction to language revitalization, UK: CUP.
GRIERSON, George A. (2005) Linguistic Survey of India, Delhi: Low Price Publications [New Delhi: Motilal Banarsidas, 1908].
GUSAIN, Lakhan (1999) A Descriptive Grammar of Bagri, Ph. D. dissertation. New Delhi: Jawaharlal Nehru University.
HOGANKBRUN, Gabrielle & Stefan WOLFF (2010) Minority Languages in Europe: Frameworks, Status, Prospects, Basingstoke: Palgrave Macmillan.
KEAY, John (2000) India: A History, New York: Grove Press.
KELLOGG, S. H. (1875) A Grammar of Hindi Language, London: Routledge and Kegan Paul. LAL, R. B. & K. S. SINGH (2003) People of India,...
LEWIS, M. Paul. (ed.) (2009)16 Ethnologue: Language of the World, Dallas, Tex: SIL International, (accessed: 20 Jun. 2011) http://www.ethnologue.com/5C/15/show_language.asp?...
SADASIVAN S. N. (2000) A Social History of India, New Delhi: APH Pub. Corp.