Dyfyniad APA

(1996). Manual on gis for planners and decision makers. United Nations; Bangkok.

Dyfyniad Arddull Chicago

Manual on Gis for Planners and Decision Makers. New York: United Nations; Bangkok, 1996.

Dyfyniad MLA

Manual on Gis for Planners and Decision Makers. United Nations; Bangkok, 1996.

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