Cita APA (7th ed.)

Fogel, R. W. (1989). Without consent or contract: The rise and fall of American slavery. Norton.

Cita Chicago (17th ed.)

Fogel, Robert William. Without Consent or Contract: The Rise and Fall of American Slavery. New York: Norton, 1989.

Cita MLA (9th ed.)

Fogel, Robert William. Without Consent or Contract: The Rise and Fall of American Slavery. Norton, 1989.