APA (7th ed.) Citation

Northup, S., Eakin, S. L., & Logsdon, J. (1968). Twelve years a slave. Louisiana State University Press.

Chicago Style (17th ed.) Citation

Northup, Solomon, Sue L. Eakin, and Joseph Logsdon. Twelve Years a Slave. Baton Rouge: Louisiana State University Press, 1968.

MLA (9th ed.) Citation

Northup, Solomon, et al. Twelve Years a Slave. Louisiana State University Press, 1968.