APA (7th ed.) Citation

United States. Army. Air Corps. (1920). Test of revisions in cooling systems for air-cooled cylinders. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Army. Air Corps. Test of Revisions in Cooling Systems for Air-cooled Cylinders. Washington: U.S. GPO, 1920.

MLA (9th ed.) Citation

United States. Army. Air Corps. Test of Revisions in Cooling Systems for Air-cooled Cylinders. U.S. GPO, 1920.