3Cohen, A. 1998. Strategies in Learning and Using s Second Language[M]. London: Longman.
4O'Malley, J and A. Chamot. 1990. Learning Strategies in Second Language Acquisition[M]. Cambridge:Cambridge University Press.
5O' Malley, J and A Chamot. 1994. The CALLA Handbook: Implementing the Cognitive Academic Language Learning Approach[M]. Addison- Wesley, Reading MA.
6Oxford, R. 1990. Language Learning Strategies: What Every Teacher Should Know[M]. Rowley, Mass.Newbury House.
7Rubin, H.1987. Learner strategies: theoretical assumptions, research history and typology in Wenden and Rubin(eds.) :Learner Strategies in Language Learning[M]. Englewood Cliffs N J: Prentice Hall.
8Stem, H.1983. Fundamental Concepts of Language Teaching[M]. Oxford: Oxford University Press.
