APA (7th ed.) Citation

United States. National Advisory Committee for Aeronautics. (1939). Dynamic stability of helicopter with hinged rotor blades. [s.n.].

Chicago Style (17th ed.) Citation

United States. National Advisory Committee for Aeronautics. Dynamic Stability of Helicopter with Hinged Rotor Blades. [Washington]: [s.n.], 1939.

MLA (9th ed.) Citation

United States. National Advisory Committee for Aeronautics. Dynamic Stability of Helicopter with Hinged Rotor Blades. [s.n.], 1939.

Warning: These citations may not always be 100% accurate.