1Watzke, J. L. 2003. Lasting Change in Foreign Language Education: A Historical Case for Change in National Policy [M]. Santa Barbara: Greenwood Publishing Group.
5Cummins, J.. Language Learning and Bilingualism[M]. Tokyo: Sophia University (Sophia Linguistica Monograph, 29). 1991.
6LOKE KIT- KEN, Policy Intentions and Policy Outcomes: A Comparative Perspective on the Singapore Bilingual Education System[J]. Compare 1995.
7S. Gopinathan, Anne Pakir, Ho Wah Kam, and Vanithamani Saravanan (eds.)Langtage, Society and Education in Singapore: Issues and Trends Singapore[M] .Times Academic Press. 1998.
