United States. Defense Mapping Agency. Hydrographic/Topographic Center. (1986). North Atlantic Ocean, Portugal--west coast, Pôrto to Ponta da Lamparoeira (5th ed., Aug. 9, 1986 (Correct through NM 32/86).). The Center.
Chicago Style (17th ed.) CitationUnited States. Defense Mapping Agency. Hydrographic/Topographic Center. North Atlantic Ocean, Portugal--west Coast, Pôrto to Ponta Da Lamparoeira. 5th ed., Aug. 9, 1986 (Correct through NM 32/86). Washington, D.C.: The Center, 1986.
MLA (9th ed.) CitationUnited States. Defense Mapping Agency. Hydrographic/Topographic Center. North Atlantic Ocean, Portugal--west Coast, Pôrto to Ponta Da Lamparoeira. 5th ed., Aug. 9, 1986 (Correct through NM 32/86). The Center, 1986.
Warning: These citations may not always be 100% accurate.