APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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