APA (7th ed.) Citation

United States. War Department. (1915). Heavy field artillery unit accountability equipment manual for 6-inch howitzer, June 10, 1915. GPO.

Chicago Style (17th ed.) Citation

United States. War Department. Heavy Field Artillery Unit Accountability Equipment Manual for 6-inch Howitzer, June 10, 1915. [Washington]: GPO, 1915.

MLA (9th ed.) Citation

United States. War Department. Heavy Field Artillery Unit Accountability Equipment Manual for 6-inch Howitzer, June 10, 1915. GPO, 1915.