APA (7th ed.) Citation

United States. Army. Air Corps. (1921). Operations of Allied balloons in St. Mihiel offensive. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Army. Air Corps. Operations of Allied Balloons in St. Mihiel Offensive. Washington: U.S. GPO, 1921.

MLA (9th ed.) Citation

United States. Army. Air Corps. Operations of Allied Balloons in St. Mihiel Offensive. U.S. GPO, 1921.

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