Παραπομπή σε μορφή APA (7η εκδ.)

European Commission. (2004). Electricity from renewable energy sources: Encouraging green electricity in Europe. Office for Official Publications of the European Communities.

Παραπομπή σε μορφή Chicago (17η εκδ.)

European Commission. Electricity from Renewable Energy Sources: Encouraging Green Electricity in Europe. Luxembourg: Office for Official Publications of the European Communities, 2004.

Παραπομπή σε μορφή MLA (8th εκδ.)

European Commission. Electricity from Renewable Energy Sources: Encouraging Green Electricity in Europe. Office for Official Publications of the European Communities, 2004.