Cita APA (7a ed.)

Darling, A. B., & Berkowitz, B. D. (1990). The Central Intelligence Agency: An instrument of government, to 1950. Pennsylvania State University Press.

Cita Chicago Style (17a ed.)

Darling, Arthur Burr, y Bruce D. Berkowitz. The Central Intelligence Agency: An Instrument of Government, to 1950. University Park [u.a.]: Pennsylvania State University Press, 1990.

Cita MLA (9a ed.)

Darling, Arthur Burr, y Bruce D. Berkowitz. The Central Intelligence Agency: An Instrument of Government, to 1950. Pennsylvania State University Press, 1990.