Cita APA (7th ed.)

Staub, E. (1989). The roots of evil: The origins of genocide and other group violence. Cambridge University Press.

Cita Chicago (17th ed.)

Staub, Ervin. The Roots of Evil: The Origins of Genocide and Other Group Violence. New York: Cambridge University Press, 1989.

Cita MLA (9th ed.)

Staub, Ervin. The Roots of Evil: The Origins of Genocide and Other Group Violence. Cambridge University Press, 1989.