Dyfyniad APA

Korte, G. B. (2001). The GIS book/5th Ed (5th Ed.). Thomson Learning.

Dyfyniad Arddull Chicago

Korte, George B. The GIS Book/5th Ed. 5th Ed. Bangalore: Thomson Learning, 2001.

Dyfyniad MLA

Korte, George B. The GIS Book/5th Ed. 5th Ed. Thomson Learning, 2001.

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