1. Adorno T. W. The authoritarian personality. NY: Harper, 1950.
2. Allport G. W. The nature of prejudice. Garden City, NY: Doubleday Anchor Books, 1958.
3. Prejudice: Is It Societal or Personal?
4. Play therapy and race conflict in young children.
5. Berelson B. & Steiner G. A. Human behavior. NY: Harcourt, Brace & World, 1964.