5Fullan, M, et al. (1977). Research on Curriculum and Instruction Implementation. Review of educational Research, Vol. 47, No. 3. ; Snyder, J. et al.(1992). Curriculum Implementation. In P. W. Jack-son (ed.). Handbook of Research on Curriculum. NY:Macmillan Pub. Co. pp. 418-427.
6Weisz, E. (2001). A View of Curriculum as Opportunities to Learn: an Examination of Curriculum Enactment. Education, Vol. 107, No. 2.
7McDonough J, Shaw C. Materials and Methods in ELT, Oxford: Blackwell. 1993.
8Posner G J. Analyzing the Curriculum. McGraw-Hill, Inc, 1992. 12.
9Hutchinson T, Torres E. The Textbook as Agent of Change, ELT Journal, 1994. 48, (4): 315-328.
