APA (7th ed.) Citation

United States. Army. Air Corps. (1920). Manual of aerial photography (provisional). U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Army. Air Corps. Manual of Aerial Photography (provisional). Washington: U.S. GPO, 1920.

MLA (9th ed.) Citation

United States. Army. Air Corps. Manual of Aerial Photography (provisional). U.S. GPO, 1920.

Warning: These citations may not always be 100% accurate.