2Breen. M.P. & Candlin, C. N. Which materials? A consumer's and designer's guide[A]. In L, E. Sheldon (Ed.), ELT Textbooks and Materials: Problems in Evaluation and Development[C]. London: Modern English Publications in association with the British Council,1987:13-28.
3Chambers, F. Seeking consensus in coursebook evaluation[J]. ELT ,lournal. Volume, 1997,51/1:29-42.
4Cunningsworth, A. Evaluating and Selecting EFL Teaching Materials[M]. Heinemann Educational Books Ltd: London.1984.
5Cunningsworth, A. Choosing Your Coursebook [M]. Sbanghai Foreign Language Education Press, (Original work published 1995), 2002.
6Dudley-Evans, A. & Bates M. The evaluation of an ESP textbook [A]. In L. E. Sheldon (Ed.), ELT Textbooks and Materials: Problems in Evaluation and Develupment[C]. London: Modern English Publications in association with the British Council, 1987:99-105.
7Ellis, R. The empirical evaluation of language teaching materials[J]. ELT Journal. 1997 Volume 51/1,36-42.