Dyfyniad APA

FAO. (1979). Groundwater pollution: Technology, economics and management. FAO.

Dyfyniad Arddull Chicago

FAO. Groundwater Pollution: Technology, Economics and Management. Rome: FAO, 1979.

Dyfyniad MLA

FAO. Groundwater Pollution: Technology, Economics and Management. FAO, 1979.

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