APA (7th ed.) Citation

United States. National Advisory Committee for Aeronautics. (1938). Study of flying-boat take℗-off. [s.n.].

Chicago Style (17th ed.) Citation

United States. National Advisory Committee for Aeronautics. Study of Flying-boat Take℗-off. [Washington]: [s.n.], 1938.

MLA (9th ed.) Citation

United States. National Advisory Committee for Aeronautics. Study of Flying-boat Take℗-off. [s.n.], 1938.