APA (7th ed.) Citation

Gates. (2014). Duty: Memoirs of a Secretary at war. Alfred A. Knopf.

Chicago Style (17th ed.) Citation

Gates. Duty: Memoirs of a Secretary at War. New York: Alfred A. Knopf, 2014.

MLA (8th ed.) Citation

Gates. Duty: Memoirs of a Secretary at War. Alfred A. Knopf, 2014.

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