6Dorneyei,Z. Motivation in second and foreign language learning[J].Language Teaching, 1998, 31/3:117-135.
7Domeyei,Z.&K.Csizer. Ten commandments for motivating language learners: Results of an empirical study [J].Language Teaching Research, 1998, 2/3:203-29.
8Gardner.R &Lambert W E. Attitude and Motivation in Second Language Learning[M].Rowley, Mass: Newbury House, 1972.