APA (7th ed.) Citation

United States. Department of the Treasury. (1921). International ice observation and ice patrol service in North Atlantic Ocean, season of 1920. GPO.

Chicago Style (17th ed.) Citation

United States. Department of the Treasury. International Ice Observation and Ice Patrol Service in North Atlantic Ocean, Season of 1920. [Washington]: GPO, 1921.

MLA (9th ed.) Citation

United States. Department of the Treasury. International Ice Observation and Ice Patrol Service in North Atlantic Ocean, Season of 1920. GPO, 1921.

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