APA (7th ed.) Citation

United States. Civil Aeronautics Administration. (1940). Ground instructor's manual. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Civil Aeronautics Administration. Ground Instructor's Manual. [Washington]: [publisher not identified], 1940.

MLA (9th ed.) Citation

United States. Civil Aeronautics Administration. Ground Instructor's Manual. [publisher not identified], 1940.

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