APA (7th ed.) Citation

United States. Army. Air Corps. (1920). Report on performance and design of 5 representative geared aviation engines. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Army. Air Corps. Report on Performance and Design of 5 Representative Geared Aviation Engines. Washington: U.S. GPO, 1920.

MLA (9th ed.) Citation

United States. Army. Air Corps. Report on Performance and Design of 5 Representative Geared Aviation Engines. U.S. GPO, 1920.