APA (7th ed.) Citation

United States. War Department. (1939). Service of the piece 155-MM howitzer, M1918A1 truck-drawn. U.S. Govt. Printing Office.

Chicago Style (17th ed.) Citation

United States. War Department. Service of the Piece 155-MM Howitzer, M1918A1 Truck-drawn. Washington: U.S. Govt. Printing Office, 1939.

MLA (9th ed.) Citation

United States. War Department. Service of the Piece 155-MM Howitzer, M1918A1 Truck-drawn. U.S. Govt. Printing Office, 1939.