Cita APA (7a ed.)

Khlevniuk, O., & Conquest, R. (2004). The History of the Gulag: From collectivization to the great terror. Yale University Press.

Cita Chicago Style (17a ed.)

Khlevniuk, Oleg, y Robert Conquest. The History of the Gulag: From Collectivization to the Great Terror. New Haven: Yale University Press, 2004.

Cita MLA (9a ed.)

Khlevniuk, Oleg, y Robert Conquest. The History of the Gulag: From Collectivization to the Great Terror. Yale University Press, 2004.