National Geographic Society (United States). Cartographic Division, Grosvenor, G. M., Garrett,Wilbur E, Darley,Richard J, & Shupe, J. F. (1980). Mexico and Central America [cartographic material]. The Society.
Citazione stile Chigago Style (17a edizione)National Geographic Society (United States). Cartographic Division, Gilbert M. Grosvenor, Garrett,Wilbur E, Darley,Richard J, e John F. Shupe. Mexico and Central America [cartographic Material]. Washington, D.C: The Society, 1980.
Citatione MLA (9a ed.)National Geographic Society (United States). Cartographic Division, et al. Mexico and Central America [cartographic Material]. The Society, 1980.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.