Aitchson, J. (2013). Language change: Progress or decay?(4th ed.). Cambridge: Cambridge University Press.
Farasati, Sh. (2016). Language Attrition among Kalhuri Kurdish Speakers Living in Tehran. M.A. Thesis, Razi University, Kermanshah (In Persian).
Fasold, R. W. (1987). The sociolinguistics of society. Cambridge: Cambridge University Press.
Fasold, R. W. (I968). A sociolinguistic study of the pronunciation of three vowels in Detroit speech. Unpublished mimeo: Center for Applied Linguistics.
Giacalone Ramat, A. (1979). Language function and language change in minority languages. Journal of Italian Linguistics 4. 141-162.
Hansen, L. (1996). Fitting the pieces together: Attrition curves in the longterm attrition of a second language. Paper presented at the AILA Eleventh World Congress of Applied Linguistics, Jyvaskyla, Finland. In Conference Abstracts, 48.
Hansen, L. (1999). Second Language Attrition in Japanese Contexts. Oxford university press.
Herdina, P., & Jessner, U. (2002). A Dynamic Model of Multilingualism: Perspectives of Change in Psycholinguistics. Clevedon: Multilingual Matters.
Holmes, J. (2013). An Introduction to Sociolinguistics (4th edition). London: Pearson.
Hulsen, M. (2000). Language loss and language processing: Three generations of Dutch migrants in New Zealand. Nijmegen: Katholieke Universiteit Nijmegen.
Hutz, M. (2004). Is there a natural process of decay? A longitudinal study of language attrition. In M. S. Schmid, B. Köpke, M. Keijzer & L. Weilemar (Eds.), First language attrition: Interdisciplinary perspectives on methodological issues (pp. 189-207). Amsterdam/Philadelphia: John Benjamins.
Kasap, S. (2015). A case study related to the first language attrition among Kurdish-Turkish bilingual students in Turkey. Bingöl Üniversitesi Yaşayan Diller Enstitüsü Dergisi, 1 (2), 67-81.
Köpke, B & Schmid., M. S. (2004). First language attrition: The next phase. In M. S. Schmid, B. Köpke, M. Keijzer & L. Weilemar, L. (Eds), First language attrition: Interdisciplinary perspectives on methodological issues (pp. 1-43). Amsterdam: John Benjamins.
Labov, W. (1966). The Social Stratification of English in New York City (Washington, DC: Center for Applied Linguistics).
Levine, L. & H. J. Crockett (I966). Speech variation in a Piedmont community: postvocalic r. In S. Lieberson (Ed.), Explorations in sociolinguistics (pp.204-226). The Hague: Mouton.
Mahmoudi, A. (2008). Investigate Language Attrition and Changes among Native Speakers of Sardasht Kurds Living in Tehran. M.A. Thesis, Islamic Azad University of Sanandaj (In Persian).
Modarresi, Y. (1989). An Introduction to Sociolinguistics. Tehran: Institute for Humanities & Cultural Studies (In Persian).
Olshtain, E. (1989). Is second language attrition the reversal of second language acquisition? Studies in Second Language Acquisition 11, 151-165.
Oranskiji, I. M. (1999). Iranian languages (Translated by Ali Ashraf Sadeghi). Tehran: Sokhan Publication (In Persian).
Paradis, M. (2007). L1 attrition features predicted by a neurolinguistic theory of bilingualism. Language attrition. In B. Kopke, M.S. Schmid, M. Keijzer & S. Dostert (Eds.), Language attrition: Theoretical perspectives (pp.121-133). Amsterdam/Philadelphia: John Benjamins.
Schmid M. S. & B. Kopke, (2007). Bilingualism and Attrition. In Kopke, B. Schmid, M.S, Keijzer, M. and dostert, S. (Eds), Language Attrition (pp. 1-7): The Theortical Perspective, Amsterdam/Philadelphia: John Benjamins.
Schmid, M. S. (2002). First Language Attrition, Use and Maintenance: The Case of German Jews in Anglophone Countries. Amsterdam and Philadelphia: John Benjamins.
Seliger, H. (1996). Primary language attrition in the context of bilingualism. In R. Bhatia (Ed.), Handbook of second language acquisition (pp. 605–626). San Diego: Academic Press.
Shuy, R., W., W. A. Wolfram & W. K. Riley (I967). Linguistic correlates of social stratification in Detroit speech. Cooperative Research Project 6-I 347. East Lancing: U.S. Office of Education.
Trudgill, P. (1972). Sex, Covert Prestige and Linguistic Change in the Urban British English of Norwich. Language in Society Vol. 1, No. 2 (Oct., 1972), pp. 179-195.
Trudgill, P. (1997). Sociolinguistics: An Introduction to Language and Society (translated by Mohammad Tabatabaii). Tehran: Agah Publication (In Persian).
Weltens, B. & A. Cohen (1989). Language Attrition Research: An Introduction.
Studies in Second Language Acquisition,
11 (2), 127-133. Retrieved May 4, 2021, from
http://www.jstor.org/stable/44488220