United States. Navy Department. Bureau of Navigation. (1922). Officers for duty on board rigid airships. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Navy Department. Bureau of Navigation. Officers for Duty on Board Rigid Airships. Washington: [publisher not identified], 1922.
MLA (9th ed.) CitationUnited States. Navy Department. Bureau of Navigation. Officers for Duty on Board Rigid Airships. [publisher not identified], 1922.
Warning: These citations may not always be 100% accurate.