Harder, C. (2011). Understanding GIS: An ArcGIS project workbook (Esri Press.).
Citación estilo ChicagoHarder, Christian. Understanding GIS: An ArcGIS Project Workbook. Esri Press. 2011.
Cita MLAHarder, Christian. Understanding GIS: An ArcGIS Project Workbook. Esri Press. 2011.
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