Dyfyniad APA

Downs, P. W., & Gregory, K. J. (2004). River channel management: Towards sustainable catchment hydrosystems. Hodder Headline Group.

Dyfyniad Arddull Chicago

Downs, Peter W., and Kenneth J. Gregory. River Channel Management: Towards Sustainable Catchment Hydrosystems. London: Hodder Headline Group, 2004.

Dyfyniad MLA

Downs, Peter W., and Kenneth J. Gregory. River Channel Management: Towards Sustainable Catchment Hydrosystems. Hodder Headline Group, 2004.

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