Não informado. (1990). Cartography and geographic information systems. American Congress on Surveying and Mapping.
Cita Chicago Style (17a ed.)Não informado. Cartography and Geographic Information Systems. Bethesda, Md: American Congress on Surveying and Mapping, 1990.
Cita MLA (8a ed.)Não informado. Cartography and Geographic Information Systems. American Congress on Surveying and Mapping, 1990.
Precaución: Estas citas no son 100% exactas.
