Não informado. HO publications. U.S. Navy Department, Hydrographic Office.
Chicago-referens (17:e uppl.)Não informado. HO Publications. Washington: U.S. Navy Department, Hydrographic Office.
MLA-referens (8:e uppl.)Não informado. HO Publications. U.S. Navy Department, Hydrographic Office.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.