APA (7th ed.) Citation

United States. War Department. (1918). Regulations governing correspondents and photographers with U.S. Army. GPO.

Chicago Style (17th ed.) Citation

United States. War Department. Regulations Governing Correspondents and Photographers with U.S. Army. [Washington]: GPO, 1918.

MLA (9th ed.) Citation

United States. War Department. Regulations Governing Correspondents and Photographers with U.S. Army. GPO, 1918.

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