Παραπομπή APA
European Commission. (1997). Wind energy, the facts. Luxembourg: Office for Official Publications of the European Communities.
Παραπομπή Chicago StyleEuropean Commission. Wind Energy, the Facts. Luxembourg: Office for Official Publications of the European Communities, 1997.
Παραπομπή MLAEuropean Commission. Wind Energy, the Facts. Luxembourg: Office for Official Publications of the European Communities, 1997.
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