Παραπομπή APA
Leeuw, F. d., & European Environment Agency. (2000). Air pollution by ozone in Europe in 1998 and summer 1999. Luxembourg: Office for Official Publications of the European Communities.
Παραπομπή Chicago StyleLeeuw, Frank de., and European Environment Agency. Air Pollution By Ozone in Europe in 1998 and Summer 1999. Luxembourg: Office for Official Publications of the European Communities, 2000.
Παραπομπή MLALeeuw, Frank de., and European Environment Agency. Air Pollution By Ozone in Europe in 1998 and Summer 1999. Luxembourg: Office for Official Publications of the European Communities, 2000.
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