APA (7th ed.) Citation

United States. Hydrographic Office. (1937). 1938 Radio Aids to Navigation, Volume II, Radio Weather Broadcasts. [s.n.].

Chicago Style (17th ed.) Citation

United States. Hydrographic Office. 1938 Radio Aids to Navigation, Volume II, Radio Weather Broadcasts. [Washington]: [s.n.], 1937.

MLA (9th ed.) Citation

United States. Hydrographic Office. 1938 Radio Aids to Navigation, Volume II, Radio Weather Broadcasts. [s.n.], 1937.

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