Dyfyniad APA

Hardy, J. T. (2003). Climate change: ; Causes, effects and solutions. John Wiley & sons.

Dyfyniad Arddull Chicago

Hardy, John T. Climate Change: ; Causes, Effects and Solutions. USA: John Wiley & sons, 2003.

Dyfyniad MLA

Hardy, John T. Climate Change: ; Causes, Effects and Solutions. John Wiley & sons, 2003.

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