6Aaronson, E. 1978. The Jigsaw Classroom. Beverly Hills, CA: Sage Publications.
7Arnold, J. and D. Brown. 1999. "A map of the terrain. In J. Arnold (ed.) Affect in Language Learning. Cambridge :Cambridge University Press.
8Bejarano, Y. 1999. "An integrated group work model for the second language classroom." In S. Sharan (ed.) Handbook of Cooperative Learning Methods.London: Praeger Publishers.
9Crandall, J. 1999. "Cooperative language learning and affective factors." In J. Arnold (ed). Affect in Language Learning. Cambridge: Cambridge University Press.
10Dornyei, Z. and Angi Malderez. 1999. "The role of group dynamics in foreign language learning and teaching". In J. Arnold (ed.) Affect in Language Learning. Cambridge: Cambridge University Press.