Dyfyniad APA

Duijvenbooden, W. v. (1981). Quality of groundwater: Proceedings of an international symposium, Noordwijkerhout, the Netherlands, 23-27 March 1981. Elsevier Science Publishing.

Dyfyniad Arddull Chicago

Duijvenbooden, W. van. Quality of Groundwater: Proceedings of an International Symposium, Noordwijkerhout, the Netherlands, 23-27 March 1981. Amsterdam: Elsevier Science Publishing, 1981.

Dyfyniad MLA

Duijvenbooden, W. van. Quality of Groundwater: Proceedings of an International Symposium, Noordwijkerhout, the Netherlands, 23-27 March 1981. Elsevier Science Publishing, 1981.

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