APA (7th ed.) Citation

Northup, S. (2014). 12 years a slave : a true story / Solomon Northup: A true story. Collins Classics.

Chicago Style (17th ed.) Citation

Northup, Solomon. 12 Years a Slave : A True Story / Solomon Northup: A True Story. London: Collins Classics, 2014.

MLA (9th ed.) Citation

Northup, Solomon. 12 Years a Slave : A True Story / Solomon Northup: A True Story. Collins Classics, 2014.

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