United States. Bureau of Fisheries. (1931). Outlook for mackerel fishery in 1931. GPO.
Chicago Style (17th ed.) CitationUnited States. Bureau of Fisheries. Outlook for Mackerel Fishery in 1931. [Washington]: GPO, 1931.
MLA (9th ed.) CitationUnited States. Bureau of Fisheries. Outlook for Mackerel Fishery in 1931. GPO, 1931.
Warning: These citations may not always be 100% accurate.