APA (7th ed.) Citation

Pettigrew, T. F., & Tropp, L. R. (2011). When groups meet: The dynamics of intergroup contact. Psychology Press.

Chicago Style (17th ed.) Citation

Pettigrew, Thomas F., and Linda R. Tropp. When Groups Meet: The Dynamics of Intergroup Contact. New York: Psychology Press, 2011.

MLA (9th ed.) Citation

Pettigrew, Thomas F., and Linda R. Tropp. When Groups Meet: The Dynamics of Intergroup Contact. Psychology Press, 2011.