Dyfyniad APA

European Commission & Energy in Europe DG. (2000). 1999 - Annual Energy Review: Energy in Europe. European Communities.

Dyfyniad Arddull Chicago

European Commission and Energy in Europe DG. 1999 - Annual Energy Review: Energy in Europe. Luxembourg: European Communities, 2000.

Dyfyniad MLA

European Commission and Energy in Europe DG. 1999 - Annual Energy Review: Energy in Europe. European Communities, 2000.

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