Mitchell, A. (1999). The ESRI Guide to GIS Analysis Volume 1: Geographic patterns & relationships. esri press.
Chicago-viite (17. p.)Mitchell, Andy. The ESRI Guide to GIS Analysis Volume 1: Geographic Patterns & Relationships. New York: esri press, 1999.
MLA-viite (9. p.)Mitchell, Andy. The ESRI Guide to GIS Analysis Volume 1: Geographic Patterns & Relationships. esri press, 1999.
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