DuVander, Adam (2010).  Map Scripting 101. San Francisco, CA: No Starch Press, Inc.

Geographic Data Abstraction Library (GDAL),

Geographic Data Abstraction Library (GDAL) Utilities,

Geographic Data Abstraction Library (GDAL) OGR2OGR Utility,

GIMP: The GNU Image Manipulation Program,

Google Inc, Keyhole Markup Language,

Hazzard, Eric (2011). OpenLayers 2.10 - Beginner's Guide.  Birmingham, UK: Packt Publishing.

Inkscape (an open source scalable vector graphics editor),

Libre Office,

Michigan Department of Information Technology, Center for Geographic Information, Michigan Geographic Data Library:

Michigan Department of Natural Resources, Map Projections, updated 05/29/01.

Open Geospatial Consortium,

Open Geospatial Consortium, Geography Markup Language,

Open Source as Alternative,

Open Source Initiative (OSI),

Pennsylvania State University, College of Earth and Mineral Sciences, Open Educational Resources Courseware Modules

Pennsylvania State University, MGIS Program, Department of Geography & John E. Dutton e-Education Institute, Geography 585 - Open Web Mapping

Quantum GIS (QGIS),

Sherman, Gary E. (2012). The Geospatial Desktop, Locate Press, Williams Lake, British Columbia.

Shorter, Cameron (2010),  How to Sell Open Source Source to Government,

Steiniger, Stefan, and Geoffrey J. Hay, Free and open source geographic information tools for landscape ecology, Ecological Informatics, Volume 4, Issue 4, September 2009, Pages 183-195.

Svennerberg, Gabriel (2010). Beginning Google Maps API V3. New York, NY: Apress.

uDig (User Friendly Desktop Internet GIS),

Wernecke, Josie (2009). The KML Handbook: Geographic Visualization for the Web. Boston, MA: Pearson Education (Addison-Wesley).