APA (7th ed.) Citation

(1933). Memorandum for aviators, Oct. 04, 1933. [s.n.].

Chicago Style (17th ed.) Citation

Memorandum for Aviators, Oct. 04, 1933. [Washington]: [s.n.], 1933.

MLA (9th ed.) Citation

Memorandum for Aviators, Oct. 04, 1933. [s.n.], 1933.

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