European Commission. Directorate-General for Energy and Transport., & Market Observatory for Energy. (2008). Europe's energy position present and future: Demand- resources- investments. Luxembourg: Office for Official Publications of the European Communities.
Παραπομπή Chicago StyleEuropean Commission. Directorate-General for Energy and Transport., and Market Observatory for Energy. Europe's Energy Position Present and Future: Demand- Resources- Investments. Luxembourg: Office for Official Publications of the European Communities, 2008.
Παραπομπή MLAEuropean Commission. Directorate-General for Energy and Transport., and Market Observatory for Energy. Europe's Energy Position Present and Future: Demand- Resources- Investments. Luxembourg: Office for Official Publications of the European Communities, 2008.