Instituto Geográfico Nacional, Guatemala. Dirección General de Cartografía, United States. Army Map Service, United States. Defense Mapping Agency, & Inter American Geodetic Survey. (1960). Guatemala 1: 50.000 (la. ed.). IGN.
Chicago Style (17th ed.) CitationInstituto Geográfico Nacional, Guatemala. Dirección General de Cartografía, United States. Army Map Service, United States. Defense Mapping Agency, and Inter American Geodetic Survey. Guatemala 1: 50.000. la. ed. Guatemala: IGN, 1960.
MLA (8th ed.) CitationInstituto Geográfico Nacional, et al. Guatemala 1: 50.000. la. ed. IGN, 1960.
Warning: These citations may not always be 100% accurate.