APA (7th ed.) Citation

United States. Army. Air Corps. (1924). Maryland, Elk Mills, emergency field. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Army. Air Corps. Maryland, Elk Mills, Emergency Field. Washington: U.S. GPO, 1924.

MLA (9th ed.) Citation

United States. Army. Air Corps. Maryland, Elk Mills, Emergency Field. U.S. GPO, 1924.

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