Παραπομπή APA
European Commission. (1999). Technologies for improved energy services: New solutions in energy utilisation. Overview 1995-1998. Luxembourg: Office for Official Publications of the European Communities.
Παραπομπή Chicago StyleEuropean Commission. Technologies for Improved Energy Services: New Solutions in Energy Utilisation. Overview 1995-1998. Luxembourg: Office for Official Publications of the European Communities, 1999.
Παραπομπή MLAEuropean Commission. Technologies for Improved Energy Services: New Solutions in Energy Utilisation. Overview 1995-1998. Luxembourg: Office for Official Publications of the European Communities, 1999.
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