1. Oxford placement test 1B1;Allen,1985
2. Boyle, J.P. (1987). “Sex differences in learning vocabulary” Language Learning, 37:237 284.6. Brown, H. Douglas. (1994). Principle of language learning and teaching. New Jersey : Prentice-hall,Inc.
3. Getting the words out: Facilitated communication training;Crossley;Topics- in- Language- Disorders,1992
4. Doron, S. (1973). “Reflexivity-impulsivity and their influence on reading for inference for adult students of ESL.” Unpublished manuscript, University of Michigan.