1. Allport, G. W., The Nature of Prejudice. Addison-Wesley, USA, 1954.
2. Series No. III;T. W. Adorno,1950
3. Christie, R. &Jahoda, M., Studies in the scope and method of “The Authoritarian Personality”. Free Press, Illinois, 1954.
4. Rokeach, M., The Open and Closed Mind. Basic Books. New York, 1960.
5. Harris et al. Children's ethnic attitudes related to methods of child rearing. Child Development. 21. 1950.