Cita APA

Gorr, W. L. (2006). Learning and using geographic information systems: ArcExplorer edition. Boston, MA: Thomson Course Technology.

Chicago Style Citation

Gorr, Wilpen L. Learning and Using Geographic Information Systems: ArcExplorer Edition. Boston, MA: Thomson Course Technology, 2006.

Cita MLA

Gorr, Wilpen L. Learning and Using Geographic Information Systems: ArcExplorer Edition. Boston, MA: Thomson Course Technology, 2006.

Atenció: Aquestes cites poden no estar 100% correctes.