5Baddeley, A. 1997. Human Memory: Theory amd Practice (rev edn. )[M]. Hove (UK): Psychology Press.
6Craik, F. & E. Tulving. 1975. Depth of processing and the retention of words in episodic memory [ J ].Journal of Experimental Psychology 104: 268-294.
7Craik, F. I.M. & R.S. Lockhart. 1972. Levels of processing: A framework for memory research [ J].Journal of Verbal Learning and Verbal Behavior 11: 671-684.
8Ellis, R. 1994. The Study of Second Language Acquisition [ M]. Oxford: Oxford University Press.
9Eysenck, M.W. 1978. Levels of processing: A critique [J]. British Journal of Psychology 69: 157-169.
10Gass, S. M. & C. G. Madden. 1985. Input in Second Language Acquisition: Series on Issues in Second Language Research [M]. New York: Newbury House Publishers.