APA (7th ed.) Citation

United States. Army. (1949). Field fortifications. Headquarters, Dept. of the Army.

Chicago Style (17th ed.) Citation

United States. Army. Field Fortifications. Washington, D.C.: Headquarters, Dept. of the Army, 1949.

MLA (9th ed.) Citation

United States. Army. Field Fortifications. Headquarters, Dept. of the Army, 1949.

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