Παραπομπή APA
European Commission. (1999). Cleaner technologies for energy conversion: New solutions in energy supply : overview 1995-1998. Luxembourg: Office for Official Publications of the European Communities.
Παραπομπή Chicago StyleEuropean Commission. Cleaner Technologies for Energy Conversion: New Solutions in Energy Supply : Overview 1995-1998. Luxembourg: Office for Official Publications of the European Communities, 1999.
Παραπομπή MLAEuropean Commission. Cleaner Technologies for Energy Conversion: New Solutions in Energy Supply : Overview 1995-1998. Luxembourg: Office for Official Publications of the European Communities, 1999.
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