de Leeuw, F., & Bogman, F. (2001). Air pollution by ozone in Europe in summer 2001: Overview of exceedances of EC ozone threshold values during the summer season April-August 2001. Office for Official Publications of the European Communities.
Παραπομπή σε μορφή Chicago (17η εκδ.)de Leeuw, Frank, και Ferdinand Bogman. Air Pollution by Ozone in Europe in Summer 2001: Overview of Exceedances of EC Ozone Threshold Values During the Summer Season April-August 2001. Luxembourg: Office for Official Publications of the European Communities, 2001.
Παραπομπή σε μορφή MLA (8th εκδ.)de Leeuw, Frank, και Ferdinand Bogman. Air Pollution by Ozone in Europe in Summer 2001: Overview of Exceedances of EC Ozone Threshold Values During the Summer Season April-August 2001. Office for Official Publications of the European Communities, 2001.
