European Environment Agency., Leeuw, F. d., & Moussiopoulos, N. (2001). Air quality in larger cities in the European Union: A contribution to the Auto-Oil II programme. Luxembourg: Office for Official Publications of the European Communities.
Παραπομπή Chicago StyleEuropean Environment Agency., Frank de Leeuw, and N. Moussiopoulos. Air Quality in Larger Cities in the European Union: A Contribution to the Auto-Oil II Programme. Luxembourg: Office for Official Publications of the European Communities, 2001.
Παραπομπή MLAEuropean Environment Agency., Frank de Leeuw, and N. Moussiopoulos. Air Quality in Larger Cities in the European Union: A Contribution to the Auto-Oil II Programme. Luxembourg: Office for Official Publications of the European Communities, 2001.