European Commission. (2008). Europe's energy position present & future: Demand, resources, investments. Office for Official Publications of the European Communities.
Παραπομπή σε μορφή Chicago (17η εκδ.)European Commission. Europe's Energy Position Present & Future: Demand, Resources, Investments. Luxembourg: Office for Official Publications of the European Communities, 2008.
Παραπομπή σε μορφή MLA (8th εκδ.)European Commission. Europe's Energy Position Present & Future: Demand, Resources, Investments. Office for Official Publications of the European Communities, 2008.
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