Cita APA (7a ed.)

Barkan, S. E., & Snowden, L. L. (2001). Collective violence. Allyn and Bacon.

Cita Chicago Style (17a ed.)

Barkan, Steven E., y Lynne L. Snowden. Collective Violence. Boston London: Allyn and Bacon, 2001.

Cita MLA (8a ed.)

Barkan, Steven E., y Lynne L. Snowden. Collective Violence. Allyn and Bacon, 2001.