1. Bachman, L. (1990). Fundamental considerations in language testing. Oxford: Oxford University Press.
2. Theoretical bases of communicative approaches to Second language teaching and testing;Canale;Applied Linguistics,1980
3. Chomsky, N. (1957). Syntactic structure. New York: Wiley.
4. Chomsky, N. (1965). Aspects of the Theory of Syntax. Cambridge, Mass: MIT Press.
5. Cronen, V.E. (1995). Practical Theory and the Tasks Ahead for Social Approaches to Communication. In W. Leeds-Hurwitz (Ed.), Social approaches to communication (pp. 217-242). New York: Guilford.