Provide the map's title, indicate that the title is for a map, and list the scale to which the map is drawn. For example: "Austin Hill Country" [map]. 1:2000.
Name the database that was the source of the GIS data used to create the map and indicate that the source is a computer file. Example: SampleBase GIS Data [computer files].
Provide the location of the map's producer, the producer's name and the year of production. Example: Austin, Texas: Sample Producer, 2009.
Name the particular GIS software used to create the map, indicate that the software is GIS software, and specify the version if applicable. Example: Using: BrandName GIS [GIS software]. Version 2.0.
Provide the software publisher's location and name, and the date the software was released. Example: Los Angeles, California: SamplePublisher Inc., 2000.
Combine the recommended reference information to form the citation.
"Austin Hill Country" [map]. 1:2000. SampleBase GIS Data [computer files]. Austin, Texas: Sample Producer, 2009. Using: BrandName GIS [GIS software]. Version 2.0. Los Angeles, California: SamplePublisher Inc., 2000.