Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (9ú heag.)

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

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.