Clarke, K.C. (2003). Getting Started with Geographic Information Systems. Prentice Hall: Upper Saddle River. 340. See Chapter 8, "How to Pick a GIS"
Longley, P.A., Goodchild M.F., Maguire D.J., Rhind D.W.: Geographical Information Systems and Science. Wiley, 2005
Maguire D., Kouyoumjian V., Smith R. (2008): The Business Benefits of GIS. An ROI Approach. ESRI press 2008.
Korte, G. B.: The GIS Book. The Fifth Edition. OnWord Press. Santa Fe, 2001.