References

Cole, M., John-Steiner, V., Scriber, S. & Souberman, E., ed. &Vygotsky, L.S. (1978). Mind in Society: the development of higherpsychological processes. Cambridge, MA: Harvard University Press.

Hanfmann, E., Vakar, G. & Vygotsky, L.S. (1962). Thought andLanguage. Cambridge, MA: MIT Press.

Lefrancois, G. R. (1994). Psychology for Teaching. Belmont, CA:Wadsworth Publishing Company.

Luriia, A.R. (1992). Ape, primitive man, and child: essays in the historyof behavior. Orlando, FL: P.M. Deutsch Press.

Webster's New World Dictionary. (1980) William Collins Publishers.Inc.

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