United States. Army. Air Corps. (1921). Operating Liberty "12" and Wright-Hispano 300-h.p. engines on automobile gasoline; Types of standard service and training propellers. U.S. GPO.
Chicago Style (17th ed.) CitationUnited States. Army. Air Corps. Operating Liberty "12" and Wright-Hispano 300-h.p. Engines on Automobile Gasoline; Types of Standard Service and Training Propellers. Washington: U.S. GPO, 1921.
MLA (9th ed.) CitationUnited States. Army. Air Corps. Operating Liberty "12" and Wright-Hispano 300-h.p. Engines on Automobile Gasoline; Types of Standard Service and Training Propellers. U.S. GPO, 1921.
Warning: These citations may not always be 100% accurate.