Παραπομπή σε μορφή APA (7η εκδ.)

Huxhold, W. E. (1997). GIS county user guide: Laboratory exercises in urban Geographic Information Systems. Oxford University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Huxhold, William E. GIS County User Guide: Laboratory Exercises in Urban Geographic Information Systems. New York: Oxford University Press, 1997.

Παραπομπή σε μορφή MLA (9th εκδ.)

Huxhold, William E. GIS County User Guide: Laboratory Exercises in Urban Geographic Information Systems. Oxford University Press, 1997.