1. The Reduction of Intergroup Tensions: A Survey of Research on Problems of Ethnic, Racial, and Religious Group Relations;Williams,1947
2. The Nature of Prejudice;Allport,1954
3. INTERGROUP CONTACT THEORY
4. When Groups Meet: The Dynamics of Intergroup Contact;Pettigrew,2011
5. The Educational Benefits of Sustaining Cross-Racial Interaction among Undergraduates