APA (7th ed.) Citation

United States. Weather Bureau. (1931). International code for radio weather reports from ships. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Weather Bureau. International Code for Radio Weather Reports from Ships. Washington: U.S. GPO, 1931.

MLA (9th ed.) Citation

United States. Weather Bureau. International Code for Radio Weather Reports from Ships. U.S. GPO, 1931.

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