2Colin Baker and Sylvia Prys Jones, Encyclopedia of Bilin-gualism and Bilingual Education[ M]. Philadelphia: Multilingual Matters Ltd, 1998.
3John A. Buggs. A Better Chance to Learn: Bilingual Bicultural Education [ M ]. United States Commission on Civil Rights Clearinghouse Publication No. 51,1975.
4Alba N. Ambert. Bilingual Education and English as a Second Language: A Research (handbook 1988 - 1990 [ M ]. Kogan Page Ltd, 1991.