APA (7th ed.) Citation

United States. National Advisory Committee for Aeronautics. (1939). Two℗--stroke℗--cycle engines with unsymmetrical control diagram (supercharged engines). [s.n.].

Chicago Style (17th ed.) Citation

United States. National Advisory Committee for Aeronautics. Two℗--stroke℗--cycle Engines with Unsymmetrical Control Diagram (supercharged Engines). [Washington]: [s.n.], 1939.

MLA (9th ed.) Citation

United States. National Advisory Committee for Aeronautics. Two℗--stroke℗--cycle Engines with Unsymmetrical Control Diagram (supercharged Engines). [s.n.], 1939.