APA (7th ed.) Citation

United States. Army. Ordnance Department. (1922). Service handbook of sighting telescope No. 4, Marks I, II, and III (British). U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Army. Ordnance Department. Service Handbook of Sighting Telescope No. 4, Marks I, II, and III (British). Washington: U.S. GPO, 1922.

MLA (9th ed.) Citation

United States. Army. Ordnance Department. Service Handbook of Sighting Telescope No. 4, Marks I, II, and III (British). U.S. GPO, 1922.