6[5]Wen Qiufang. Advanced level English learning in China: The relationship of modifiable learner variables to learning outcomes[D]. Hong Kong University: Unpublished doctoral thesis, 1993.
7[6]Reid J. Learning Styles in the ESL/EFL Classroom[M]. Boston:Heinle and Heinle Publishers,1995.34-40.
8[7]Dulay H, Burt M, Krashen S. Language Two[M]. Oxford: Oxford Universtiy Press,1982. 210-220.