Cita APA (7a ed.)

McWilliams, J. C. (1990). The protectors: Harry J. Anslinger and the Federal Bureau of Narcotics, 1930-1962. Univ. of Delaware Pr. [u.a.].

Cita Chicago Style (17a ed.)

McWilliams, John C. The Protectors: Harry J. Anslinger and the Federal Bureau of Narcotics, 1930-1962. Newark [u.a.]: Univ. of Delaware Pr. [u.a.], 1990.

Cita MLA (9a ed.)

McWilliams, John C. The Protectors: Harry J. Anslinger and the Federal Bureau of Narcotics, 1930-1962. Univ. of Delaware Pr. [u.a.], 1990.