APA (7th ed.) Citation

Sullivan, J. F. (2007). Gatekeeper: Memoirs of a CIA polygraph examiner. Potomac Books.

Chicago Style (17th ed.) Citation

Sullivan, John F. Gatekeeper: Memoirs of a CIA Polygraph Examiner. Washington, D.C: Potomac Books, 2007.

MLA (9th ed.) Citation

Sullivan, John F. Gatekeeper: Memoirs of a CIA Polygraph Examiner. Potomac Books, 2007.

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