Environmental Systems Research Institute (Redlands, Calif.). (2004). ArcGIS 9. ESRI.
Chicago Style (17th ed.) CitationEnvironmental Systems Research Institute (Redlands, Calif.). ArcGIS 9. Redlands, CA: ESRI, 2004.
MLA (9th ed.) CitationEnvironmental Systems Research Institute (Redlands, Calif.). ArcGIS 9. ESRI, 2004.
Warning: These citations may not always be 100% accurate.