APA (7th ed.) Citation

Northup, S. (2000). Twelve years a slave. Dover Publications.

Chicago Style (17th ed.) Citation

Northup, Solomon. Twelve Years a Slave. Mineola, N.Y.: Dover Publications, 2000.

MLA (9th ed.) Citation

Northup, Solomon. Twelve Years a Slave. Dover Publications, 2000.

Warning: These citations may not always be 100% accurate.