Cita APA (7a ed.)

Gregory, P. R., Lazarev, V., & Conquest, R. (2003). The economics of forced labor: The Soviet Gulag. Hoover Institution Press.

Cita Chicago Style (17a ed.)

Gregory, Paul R., Valery Lazarev, y Robert Conquest. The Economics of Forced Labor: The Soviet Gulag. Stanford, California: Hoover Institution Press, 2003.

Cita MLA (9a ed.)

Gregory, Paul R., et al. The Economics of Forced Labor: The Soviet Gulag. Hoover Institution Press, 2003.