References :

Pearson, P. D. (1978). Teaching Reading Comprehension. New York: Holt, Rinehart and Winston.

Piaget, J. (1962). Play, Dreams, and Imitation in Childhood. New York: W. W. Norton.

Soo, K. (1999) Theory and research: learning styles, motivation, and the CALL classroom. In J. Egbert & E. Hanson-Smith Eds. CALL Environments: Research, Practice, and Critical Issues. Bloomington, IL: TESOL INC.

Vygotsky, L. (1978) Mind in Society: The Development of Higher Psychological Processes. (M. Cole, V. John-Steiner, S. Scribner, & E. Louberman Eds. & Trans.). Cambridge, MA: Havard University Press.

Vygotsky, L. (1986) Thought and Language (A. Kozulin Ed. & Trans.) Cambridge, MA: MIT Press.