Style de citation APA

Benson, R. L. (1996). Venona: Soviet espionage and the American response 1939 - 1957 ; [prepared from official sources]. National Security Agency [u.a.].

Style de citation Chicago

Benson, Robert L. Venona: Soviet Espionage and the American Response 1939 - 1957 ; [prepared from Official Sources]. Washington, DC: National Security Agency [u.a.], 1996.

Style de citation MLA

Benson, Robert L. Venona: Soviet Espionage and the American Response 1939 - 1957 ; [prepared from Official Sources]. National Security Agency [u.a.], 1996.