1. Aggarwal. J.C. (1995) “Essentials of Educational psychology”. Firsted New Delhivikas, publishing House pvt L td.
2. Gordon, W. (1961) “Synectics”. New york: Harper and row.
3. Joyce, B.,Weil, M., Calhoun, E. (2004) “Models Of Teaching” (translated by Dr Mohammad Reza Behrangi).Iran,Tehran:Kamal Tarbiat Saif, AH Akbar.(1988). “Educational Psychology”. Iran,Tehran Agah.
4. Torrance,E. .P. (1962) “Developing creative thinking through school experience” In S.j.Parnes&H.P. Harding (Eds.)Asource book for creative thinking.New York:Scribner.
5. Torrance, E.P. (1966) “Torrance tests of creative thinking”. BensenvilLIL: Scholastic Testing service.