APA (7th ed.) Citation

United States. Civil Aeronautics Administration. (1941). Digest of civil air regulations for pilots, 5th edition, Aug. 1941. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Civil Aeronautics Administration. Digest of Civil Air Regulations for Pilots, 5th Edition, Aug. 1941. [Washington]: [publisher not identified], 1941.

MLA (9th ed.) Citation

United States. Civil Aeronautics Administration. Digest of Civil Air Regulations for Pilots, 5th Edition, Aug. 1941. [publisher not identified], 1941.