European Commission & Energy in Europe DG. (2000). 1999 - Annual Energy Review: Energy in Europe. European Communities.
Chicagoスタイル(17版)引用形式European Commission , Energy in Europe DG. 1999 - Annual Energy Review: Energy in Europe. Luxembourg: European Communities, 2000.
MLA(9版)引用形式European Commission , Energy in Europe DG. 1999 - Annual Energy Review: Energy in Europe. European Communities, 2000.