APA (7th ed.) Citation

Audet, R. H., & Ludwig, G. S. (2000). GIS in schools. Environmental Systems Research Institute, Inc..

Chicago Style (17th ed.) Citation

Audet, Richard H., and Gail S. Ludwig. GIS in Schools. Redlands, Calif.: Environmental Systems Research Institute, Inc., 2000.

MLA (9th ed.) Citation

Audet, Richard H., and Gail S. Ludwig. GIS in Schools. Environmental Systems Research Institute, Inc., 2000.