(1999). Ozone position paper: Final version: prepared by the Ad hoc Working Group on Ozone Directive and Reduction Strategy Development. Luxembourg: Office for Official Publications of the European Communities.
Παραπομπή Chicago StyleOzone Position Paper: Final Version: Prepared By the Ad Hoc Working Group On Ozone Directive and Reduction Strategy Development. Luxembourg: Office for Official Publications of the European Communities, 1999.
Παραπομπή MLAOzone Position Paper: Final Version: Prepared By the Ad Hoc Working Group On Ozone Directive and Reduction Strategy Development. Luxembourg: Office for Official Publications of the European Communities, 1999.
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