APA (7th ed.) Citation

United States. Shipping Board. (1918). Ships and ocean; list of books on ships, commerce, and merchant marine. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Shipping Board. Ships and Ocean; List of Books on Ships, Commerce, and Merchant Marine. Washington: U.S. GPO, 1918.

MLA (9th ed.) Citation

United States. Shipping Board. Ships and Ocean; List of Books on Ships, Commerce, and Merchant Marine. U.S. GPO, 1918.

Warning: These citations may not always be 100% accurate.