Παραπομπή APA

European Commission. Directorate-General for Energy and Transport. (2011). Saving Energy: Time to step up our efforts. Luxembourg: Office for Official Publications of the European Union.

Παραπομπή Chicago Style

European Commission. Directorate-General for Energy and Transport. Saving Energy: Time to Step Up Our Efforts. Luxembourg: Office for Official Publications of the European Union, 2011.

Παραπομπή MLA

European Commission. Directorate-General for Energy and Transport. Saving Energy: Time to Step Up Our Efforts. Luxembourg: Office for Official Publications of the European Union, 2011.

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