APA-referens (7:e uppl.)

(1980). ULTRA and the history of the United States Strategic Air Force in Europe vs. the German Air Force / by the U.S. Army Air Force.

Chicago-referens (17:e uppl.)

ULTRA and the History of the United States Strategic Air Force in Europe Vs. the German Air Force / by the U.S. Army Air Force. 1980.

MLA-referens (9:e uppl.)

ULTRA and the History of the United States Strategic Air Force in Europe Vs. the German Air Force / by the U.S. Army Air Force. 1980.

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