Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.