United States. Defense Mapping Agency. Hydrographic/Topographic Center. (1985). Central America--Pacific Coast, Mexico--Guatemala--El Salvador, Puerto Madero to Acajutla (1st ed., Aug. 31, 1985 (Correct through NM 35/85).). The Center.
Chicago Style (17th ed.) CitationUnited States. Defense Mapping Agency. Hydrographic/Topographic Center. Central America--Pacific Coast, Mexico--Guatemala--El Salvador, Puerto Madero to Acajutla. 1st ed., Aug. 31, 1985 (Correct through NM 35/85). Washington, D.C.: The Center, 1985.
MLA (9th ed.) CitationUnited States. Defense Mapping Agency. Hydrographic/Topographic Center. Central America--Pacific Coast, Mexico--Guatemala--El Salvador, Puerto Madero to Acajutla. 1st ed., Aug. 31, 1985 (Correct through NM 35/85). The Center, 1985.