United States. Bureau of Foreign and Domestic Commerce. (1931). World shipbuilding situation. GPO.
Chicago Style (17th ed.) CitationUnited States. Bureau of Foreign and Domestic Commerce. World Shipbuilding Situation. [Washington]: GPO, 1931.
MLA (9th ed.) CitationUnited States. Bureau of Foreign and Domestic Commerce. World Shipbuilding Situation. GPO, 1931.
Warning: These citations may not always be 100% accurate.