1. Amadeo, J. A., Torney-Purta, J. V., Lehman, R., Husfeld, V., & Nikolova, R. (2002). Civic knowledge and engagement: An IEA study of upper secondary students in sixteen countries. Retrieved from 〈http://www.iea.nl/cived.html〉.
2. Cosmopolitanism: Ethics in a world of strangers;Appiah,2006
3. Appiah, K. A. (2006). Cosmopolitanism: Ethics in a world of strangers. New York, NY: W. W. Norton.
4. Avery, P.G., & Hahn, C.L. (1985). , April). Students׳ political attitudes: Are gender and race important variables? Paper presented at the annual meeting of the American Education Research Association (AERA), Chicago, IL.
5. Social foundations of thought and action: A social cognitive theory;Bandura,1986