United States. National Advisory Committee for Aeronautics. (1933). Negative thrust and torque characteristics of adjustable-℗Ưpitch metal propeller. [s.n.].
Chicago Style (17th ed.) CitationUnited States. National Advisory Committee for Aeronautics. Negative Thrust and Torque Characteristics of Adjustable-℗Ưpitch Metal Propeller. [Washington]: [s.n.], 1933.
MLA (9th ed.) CitationUnited States. National Advisory Committee for Aeronautics. Negative Thrust and Torque Characteristics of Adjustable-℗Ưpitch Metal Propeller. [s.n.], 1933.
Warning: These citations may not always be 100% accurate.