United States. Hydrographic Office. (1920). Baltic pilot: Volume I. Baltic Sea from Falsterbo Point and Cape Arkona to entrances of Gulfs of Finland and Bothnia. GPO.
Chicago Style (17th ed.) CitationUnited States. Hydrographic Office. Baltic Pilot: Volume I. Baltic Sea from Falsterbo Point and Cape Arkona to Entrances of Gulfs of Finland and Bothnia. [Washington]: GPO, 1920.
MLA (9th ed.) CitationUnited States. Hydrographic Office. Baltic Pilot: Volume I. Baltic Sea from Falsterbo Point and Cape Arkona to Entrances of Gulfs of Finland and Bothnia. GPO, 1920.
Warning: These citations may not always be 100% accurate.