Não informado. (1990). Cartography and geographic information systems. American Congress on Surveying and Mapping.
Čikaški stil citiranja (17. izdanje)Não informado. Cartography and Geographic Information Systems. Bethesda, Md: American Congress on Surveying and Mapping, 1990.
MLA način citiranja (8. izdanje)Não informado. Cartography and Geographic Information Systems. American Congress on Surveying and Mapping, 1990.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.