Cita APA (7a ed.)

Kramer, M. (1999). The black book of communism: Crimes, terror, repression. Harvard University Press.

Cita Chicago Style (17a ed.)

Kramer, Mark. The Black Book of Communism: Crimes, Terror, Repression. Cambridge: Harvard University Press, 1999.

Cita MLA (8a ed.)

Kramer, Mark. The Black Book of Communism: Crimes, Terror, Repression. Harvard University Press, 1999.