Dyfyniad APA

Energy Prices & Taxes. Organisation for Economic Cooperation & Development.

Dyfyniad Arddull Chicago

Energy Prices & Taxes. Organisation for Economic Cooperation & Development.

Dyfyniad MLA

Energy Prices & Taxes. Organisation for Economic Cooperation & Development.

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