APA (7th ed.) Citation

United States. Army. Signal Corps. (1919). Primary batteries. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Army. Signal Corps. Primary Batteries. Washington: U.S. GPO, 1919.

MLA (9th ed.) Citation

United States. Army. Signal Corps. Primary Batteries. U.S. GPO, 1919.

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