5[2]Duran L.Toward a Better Understanding of Code Switching and Interference in Bilinguality:Implications for Bilingual Instruction[J].The Journal of Educational Issues of Language Minority Students,1994.
6[3]Ellis R.Understanging Second Language Acquisition[M].Oxford University Press,1985.
7[4]Heller M. Code Switching:Anthropological and Sociolinguitic Perspectives[M].Berlin:Mouton de Gruyter,1988.
8[5]Hudson R A.Sociolinguistics[M].Cambridge University Press,1980.
9[6]Myers-Scotton C M.Code-Seitching[A].Florian Coulmased..The Handbook of Sociolinguisitics[M].Blackwell Publishers,1998.
10[7]Poplack S.A Formal Grammar for Code-switching[A].Centro Working Paper 8. New York:Centro de Estudios Puertorriquenos,1980.
