APA aipamena

Harmon, J. E. (2003). The Design and Implementation of Geographic Information Systems. Wiley & Sons, Inc..

Chicago Style aipamena

Harmon, John E.. The Design and Implementation of Geographic Information Systems. Wiley & Sons, Inc., 2003.

MLA aipamena

Harmon, John E.. The Design and Implementation of Geographic Information Systems. Wiley & Sons, Inc., 2003.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.