United States. Hydrographic Office. (1925). List of lights with fog signals and visible time signals of Baltic Sea, with Kattegat, Belts and Sound, and Gulf of Bothnia: Volume VI. Corrected to June 1, 1925. GPO.
Chicago Style (17th ed.) CitationUnited States. Hydrographic Office. List of Lights with Fog Signals and Visible Time Signals of Baltic Sea, with Kattegat, Belts and Sound, and Gulf of Bothnia: Volume VI. Corrected to June 1, 1925. [Washington]: GPO, 1925.
MLA (9th ed.) CitationUnited States. Hydrographic Office. List of Lights with Fog Signals and Visible Time Signals of Baltic Sea, with Kattegat, Belts and Sound, and Gulf of Bothnia: Volume VI. Corrected to June 1, 1925. GPO, 1925.
Warning: These citations may not always be 100% accurate.