Cita APA (7a ed.)

Haas, R. W. (2007). Enter the Past Tense: My Secret Life as a CIA Assassin. Potomac Books.

Cita Chicago Style (17a ed.)

Haas, Roland W. Enter the Past Tense: My Secret Life as a CIA Assassin. Washington, D.C.: Potomac Books, 2007.

Cita MLA (8a ed.)

Haas, Roland W. Enter the Past Tense: My Secret Life as a CIA Assassin. Potomac Books, 2007.