4Vroom, V. 1964. Work and Motivation [M]. New.York: Wiley.
5Weiner, B. 1979. A theory of motivation for some classroom experiences [J]. Journal of Educational Psychology 71 : 3-25.
6Wen, Qiufang & R. K. Johnson. 1997. L2 learner variables and English achievement: A study of tertiarylevel English majors in China [J]. Applied Linguistics 18: 27-48.
7Williams, M. & R. Burden. 1997. Psychology for Language Teachers [M]. Cambridge: Cambridge University Press.
8Zanden, J. V. & A. J. Pace. 1984. Educational Psychology: In Theory and Practice [M]. New York:Random House.
9Allwright, R. 1984. The importance of interaction in classroom language learning [ J ]. Applied Linguistics 5.
10Ames, C. 1992. Classrooms, goals, structures, and student motivation [ J ]. Journal of Educational Psychology 84: 267-271.