APA (7th ed.) Citation

United States. Army. Ordnance Department. (1921). General orders, 1921. GPO.

Chicago Style (17th ed.) Citation

United States. Army. Ordnance Department. General Orders, 1921. [Washington]: GPO, 1921.

MLA (9th ed.) Citation

United States. Army. Ordnance Department. General Orders, 1921. GPO, 1921.

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