APA (7th ed.) Citation

United States. Army. Ordnance Department. (1924). Elementary optics and applications to fire control. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Army. Ordnance Department. Elementary Optics and Applications to Fire Control. Washington: U.S. GPO, 1924.

MLA (9th ed.) Citation

United States. Army. Ordnance Department. Elementary Optics and Applications to Fire Control. U.S. GPO, 1924.

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