United States. Navy Department. Bureau of Navigation. (1929). O2U-4 type airplanes, diving restrictions. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Navy Department. Bureau of Navigation. O2U-4 Type Airplanes, Diving Restrictions. Washington: [publisher not identified], 1929.
MLA (9th ed.) CitationUnited States. Navy Department. Bureau of Navigation. O2U-4 Type Airplanes, Diving Restrictions. [publisher not identified], 1929.
Warning: These citations may not always be 100% accurate.