A FEW REFERENCES
Alba, R., Logan, J., Lutz, A., & Stults, B. (2002). Only English by the third generation? Loss and preservation of the mother tongue among the grandchildren of contemporary immigrants. Demography, 39(3), 467-484.
Cummins, J. (2001). Bilingual children’s mother tongue: Why is it important for education. Sprogforum, 19, 15-20.
Cummins, J. (1978). Educational Implications of Mother Tongue Maintenance in Minority Language Groups. Canadian Modern Language Review, 34(3), 395-416.
Skutnabb-Kangas, T. (2012). The role of mother tongues: educational goals and models, linguistic diversity, and language rights. In K. Gya, A. Snavely & E. Sperling (Eds). Minority Language in Today’s Global Society. New York: Trace Foundation, 127-161.
Skutnabb-Kangas, T. (2013, November). Short definitions-mother tongue. Copyright Tove Skutnabb-Kangas; downloaded from www.tove-skutnabb-kangas.org on Nov. 27, 2013.
Skutnabb-Kangas, T., & Phillipson, R., (1989). 'Mother Tongue': The Theoretical and Sociopolitical Construction of a Concept. In U. Ammon (Ed.), Status and Function of Languages and Language Varieties. Berlin, New York: Walter de Gruyter.