APA (7th ed.) Citation

United States. Civil Aeronautics Administration & Shedenhelm, L. E. (1940). Pilots' powerplant manual. U.S. Govt. print. off.

Chicago Style (17th ed.) Citation

United States. Civil Aeronautics Administration and Lawrence Ellsworth Shedenhelm. Pilots' Powerplant Manual. Washington: U.S. Govt. print. off, 1940.

MLA (9th ed.) Citation

United States. Civil Aeronautics Administration and Lawrence Ellsworth Shedenhelm. Pilots' Powerplant Manual. U.S. Govt. print. off, 1940.