Dyfyniad APA

Energy and Policy Research | Taylor & Francis Group. Cambridge University Press.

Dyfyniad Arddull Chicago

Energy and Policy Research | Taylor & Francis Group. Cambridge University Press.

Dyfyniad MLA

Energy and Policy Research | Taylor & Francis Group. Cambridge University Press.

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