Παραπομπή σε μορφή APA (7η εκδ.)

European Commission. (2005). Report on the green paper on energy: Four years of european initiatives. Office for Official Publications of the European Communities.

Παραπομπή σε μορφή Chicago (17η εκδ.)

European Commission. Report on the Green Paper on Energy: Four Years of European Initiatives. Luxembourg: Office for Official Publications of the European Communities, 2005.

Παραπομπή σε μορφή MLA (8th εκδ.)

European Commission. Report on the Green Paper on Energy: Four Years of European Initiatives. Office for Official Publications of the European Communities, 2005.