APA (7th ed.) Citation

United States. Army. Air Corps. (1921). Report on performance of 5.5-inch by 6.5-inch Smith cylinder unit (Power Plant Section report). U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Army. Air Corps. Report on Performance of 5.5-inch by 6.5-inch Smith Cylinder Unit (Power Plant Section Report). Washington: U.S. GPO, 1921.

MLA (9th ed.) Citation

United States. Army. Air Corps. Report on Performance of 5.5-inch by 6.5-inch Smith Cylinder Unit (Power Plant Section Report). U.S. GPO, 1921.