APA (7th ed.) Citation

United States. Army. Air Corps. (1919). Tachometers for airplane engines. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Army. Air Corps. Tachometers for Airplane Engines. Washington: U.S. GPO, 1919.

MLA (9th ed.) Citation

United States. Army. Air Corps. Tachometers for Airplane Engines. U.S. GPO, 1919.

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