United States. Hydrographic Office. (1925). List of lights with fog signals and visible time signals of British Islands, English Channel, and North Sea: Volume IV. Corrected to June 15, 1925. GPO.
Chicago Style (17th ed.) CitationUnited States. Hydrographic Office. List of Lights with Fog Signals and Visible Time Signals of British Islands, English Channel, and North Sea: Volume IV. Corrected to June 15, 1925. [Washington]: GPO, 1925.
MLA (9th ed.) CitationUnited States. Hydrographic Office. List of Lights with Fog Signals and Visible Time Signals of British Islands, English Channel, and North Sea: Volume IV. Corrected to June 15, 1925. GPO, 1925.
Warning: These citations may not always be 100% accurate.