Παραπομπή APA
Gugele, B., Ritter, M., & European Environment Agency. (2001). European Community and member states greenhouse gas emission trends 1990-1999. Luxembourg: Office for Official Publications of the European Communities.
Παραπομπή Chicago StyleGugele, Bernd., Manfred Ritter, and European Environment Agency. European Community and Member States Greenhouse Gas Emission Trends 1990-1999. Luxembourg: Office for Official Publications of the European Communities, 2001.
Παραπομπή MLAGugele, Bernd., Manfred Ritter, and European Environment Agency. European Community and Member States Greenhouse Gas Emission Trends 1990-1999. Luxembourg: Office for Official Publications of the European Communities, 2001.
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