APA (7th ed.) Citation

United States. War Department. (1942). Ordnance maintenance, plotting boards for field artillery. War Dept. : U.S. G.P.O..

Chicago Style (17th ed.) Citation

United States. War Department. Ordnance Maintenance, Plotting Boards for Field Artillery. Washington [D.C.]: War Dept. : U.S. G.P.O., 1942.

MLA (9th ed.) Citation

United States. War Department. Ordnance Maintenance, Plotting Boards for Field Artillery. War Dept. : U.S. G.P.O., 1942.