University of California Copyright
Visual Resources Association. Intellectual Property Rights and Copyright.
ARS Artists Rights Society. Copyright basics.
Stanford University Libraries Copyright & Fair Use
UC Berkeley Library: Copyright & Fair Use
College Art Association. Fair use in the Visual Arts
College Art Association. Image sources and rights clearance agencies
UC Berkeley's Image Copyright Libguide.
It's important to cite references to GIS data, maps, or other geospatial material in your work. Here are some resources to help you properly cite your GIS materials.