APA (7th ed.) Citation

O'Reilly, B., & Dugard, M. (2011). Killing Lincoln: The shocking assassination that changed America forever. Henry Holt.

Chicago Style (17th ed.) Citation

O'Reilly, Bill, and Martin Dugard. Killing Lincoln: The Shocking Assassination That Changed America Forever. New York: Henry Holt, 2011.

MLA (8th ed.) Citation

O'Reilly, Bill, and Martin Dugard. Killing Lincoln: The Shocking Assassination That Changed America Forever. Henry Holt, 2011.

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