Scope of the Study Significance of the Study

dictionary of Siladang language. By doing this way, Siladang will have the documentation of their language and it is not just oral language. 7. To the next researcher is suggested to focus on the maintenance of Siladang language that related to language use in every domain of the Siladang people. REFERENCES Baker, C. 2001. Foundation of Bilingual Education and Bilingualism.Clevedon: Multilingual Matters. , C. 2006. Foundations of Bilingual Education and Bilingualism. 4th Ed.. N. H. Hornberger Ed.. Bilingual Education and Bilingualism. New York: Multilingual Matters. Batibo, H. 2005. Language Decline and Language Death in Africa: Causes, Consequences And Challenges. New York: Multi Lingual Matters. Batubara, A.J. 2012. The Maintenance of Bahasa Mandailing Medan- Tembung. Pasca Sarjana Universitas Negeri Medan. Bogdan, Robert C. and Biklen, Sari Knopp. 1992. Qualitative Rresearch for Education: An Introduction to Theory and Method. Needham Heights: Allyn and Bacon. Bratt Paulston, Christina. 1986. Linguistic consequences of ethnicity and nationalism in multilingual settings. In Bernard Spolsky Ed., Language and education in multilingual settings pp. 117-152. Clevedon, England: Multilingual Matters. Burns. David. D. 1995. Therapist’s Toolkit: Comprehensive Treatment and Assessment Tools for the Mental Health Professional. Philadelphia : Author. Carson, David. 2001. Language age Diversity and Education. New Jersey :Lawrence Erlbaum. Clyne, M. Kipp, S. 1999. Pluricentric Languages in an Immigrant Context. Berlin: Mouton de Gruyter. Crystal, David. 2000. Language Death. Cambridge: Cambridge University Press. Crystal, D. 2001. Language Death.Cambridge: Cambridge University Press. Damanik, Ramlan. 2009. Pemertahanan Bahasa Simalungun di Kabupaten Simalungun, A Thesis, University of North Sumatera. Denzin,N.K. Lincoln, Y.S. 1994. Handbook of qualitative research. Thousand Oaks :Sage Publication.