United States. USAF Historical Division & Greer, T. H. (1970). The development of air doctrine in the Army air arm, 1917-1941. Aerospace Historian, Dept. of History [Kansas State University].
Chicago Style (17th ed.) CitationUnited States. USAF Historical Division and Thomas H. Greer. The Development of Air Doctrine in the Army Air Arm, 1917-1941. Manhattan: Aerospace Historian, Dept. of History [Kansas State University], 1970.
MLA (9th ed.) CitationUnited States. USAF Historical Division and Thomas H. Greer. The Development of Air Doctrine in the Army Air Arm, 1917-1941. Aerospace Historian, Dept. of History [Kansas State University], 1970.
Warning: These citations may not always be 100% accurate.