APA (7th ed.) Citation

Sullivan. (2007). Gatekeeper: Memoirs of CIA polygraph examiner. Potomac Books.

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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

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