European Commission. (1997). An estimate of eco-industries in the European Union 1994: A joint project of DG XI-Environment, Nuclear and Civil Protection, Eurostat-the Statistical Office of the European Communities. Luxembourg: Office for Official Publications of the European Communities.
Παραπομπή Chicago StyleEuropean Commission. An Estimate of Eco-industries in the European Union 1994: A Joint Project of DG XI-Environment, Nuclear and Civil Protection, Eurostat-the Statistical Office of the European Communities. Luxembourg: Office for Official Publications of the European Communities, 1997.
Παραπομπή MLAEuropean Commission. An Estimate of Eco-industries in the European Union 1994: A Joint Project of DG XI-Environment, Nuclear and Civil Protection, Eurostat-the Statistical Office of the European Communities. Luxembourg: Office for Official Publications of the European Communities, 1997.