United States. Hydrographic Office. (1925). Radio aids to navigation, including details of radiocompass stations, fog signals, weather bulletins, storm and navigational warnings, time signals, et cetera. GPO.
Chicago Style (17th ed.) CitationUnited States. Hydrographic Office. Radio Aids to Navigation, Including Details of Radiocompass Stations, Fog Signals, Weather Bulletins, Storm and Navigational Warnings, Time Signals, Et Cetera. [Washington]: GPO, 1925.
MLA (9th ed.) CitationUnited States. Hydrographic Office. Radio Aids to Navigation, Including Details of Radiocompass Stations, Fog Signals, Weather Bulletins, Storm and Navigational Warnings, Time Signals, Et Cetera. GPO, 1925.
Warning: These citations may not always be 100% accurate.