Dyfyniad APA

Energy Sources, Part B: Economics, Planning, and Policy. Cambridge University Press.

Dyfyniad Arddull Chicago

Energy Sources, Part B: Economics, Planning, and Policy. Cambridge University Press.

Dyfyniad MLA

Energy Sources, Part B: Economics, Planning, and Policy. Cambridge University Press.

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