APA (7th ed.) Citation

Johnson, T. L. (1882). Twenty-eight years a slave. Yates Alexander and Shepheard.

Chicago Style (17th ed.) Citation

Johnson, Thomas L. Twenty-eight Years a Slave. London: Yates Alexander and Shepheard, 1882.

MLA (9th ed.) Citation

Johnson, Thomas L. Twenty-eight Years a Slave. Yates Alexander and Shepheard, 1882.