3Allwright, R.L.What do we want teaching materials for?[J].ELTJournal 36 (1981): 5- 18.
4Breen, M.& C.Candlin.Which materials?: a consumer's and designer's guide [A].ELT Textbooks and Materials: Problems in Evaluation and Development [C].ed.L.E.Sheldon.London: Modern EnglishPublications, 1987.14- 28.
5Cunningsworth, A.Evaluating and Selecting ELT Teaching Materials [M].London: Heinemann, 1984.
6Hutchinson, Tom.What's underneath? An interactive view of materials evaluation [A].ELT Textbooks and Materials: Problems in Evaluation and Development [C].ed.L.E.Sheldon.London: Modern English Publications, 1987.37- 44.
7Hutchinson, T.& A.Waters.English for Specific Purpose [M].Cambridge: Cambridge University Press, 1887.
8McNonough, J.& C.Shaw.Materials and Methods in ELT [M].Cambridge and Mass: Blackwell, 1993.63-80.
9Prabhu, N.S.Materials as Support : Materials as Constraint [J].Guidelines 11 (1989): 66-75.
10Sheldon, L.E.(ed) ELT Textbooks and Materials:Problems in Evaluation and Development [C].The British Council, 1987.245.
