APA (7th ed.) Citation

United States. Army. Air Corps. (1921). Operating tests of magnetically operated starting switches. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Army. Air Corps. Operating Tests of Magnetically Operated Starting Switches. Washington: U.S. GPO, 1921.

MLA (9th ed.) Citation

United States. Army. Air Corps. Operating Tests of Magnetically Operated Starting Switches. U.S. GPO, 1921.

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