(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.
芝加哥风格引文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引文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.
警告：这些引文格式不一定是100％准确.