United States. National Imagery and Mapping Agency. (1997). South America--west coast, Ecuador, Punta Ancon to Isla Santa Clara (4th ed., Jan. 4, 1997 (Correct through NM 1/97).). The Agency.
Chicago Style (17th ed.) CitationUnited States. National Imagery and Mapping Agency. South America--west Coast, Ecuador, Punta Ancon to Isla Santa Clara. 4th ed., Jan. 4, 1997 (Correct through NM 1/97). [Bethesda, Md.]: The Agency, 1997.
MLA (9th ed.) CitationUnited States. National Imagery and Mapping Agency. South America--west Coast, Ecuador, Punta Ancon to Isla Santa Clara. 4th ed., Jan. 4, 1997 (Correct through NM 1/97). The Agency, 1997.
Warning: These citations may not always be 100% accurate.