Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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