4Biggs, J. B. 1979. "Individual differences in study proces- ses and the quality of learning outcomes". Higher Educa- tion 8 : 381-394.
5Bongaerts, T. , et al. 1997. "Age and ultimate attainment in the pronunciation of a foreign language". Studies in Second Language Acquisition 19: 447-465.
6Derwing, T. M. & M. J. Rossiter. 2002. "ESL learners' perceptions of their pronunciation needs and strategies". System 30 : 155-166.
7Moyer, A. 1999. "Ultimate attainment in L2 phonology: The critical factors of age, motivation, and instruction". Stud- ies in Second Language Acquisition 21 : 81-108.
8Ogawara, Y. 1997. "The self-monitoring of foreign students of Japanese in pronunciation learning". Japanese Journal of Educational Psychology 45 : 438-448.
9Osburne, A. G. 2003. "Pronunciation strategies of advanced ESOL learners" .' International Review of Applied Linguistics 41 : 131-143.
10Oxford,R.L.2008.Language Learning Strategies:What Every Teacher Should Know.北京:世界图书出版公司.
