Cita APA (7th ed.)

Northup, S., Eakin, S. L., & Logsdon, J. (1996). Twelve years a slave (Louisiana pbk. ed., 1975.). Louisiana State University Press.

Cita Chicago (17th ed.)

Northup, Solomon, Sue L. Eakin, i Joseph Logsdon. Twelve Years a Slave. Louisiana pbk. ed., 1975. Baton Rouge: Louisiana State University Press, 1996.

Cita MLA (9th ed.)

Northup, Solomon, et al. Twelve Years a Slave. Louisiana pbk. ed., 1975. Louisiana State University Press, 1996.