European Commission. (1999). Enlargement and environment: Principles and recommendations from the European Consultative Forum on the Environment and Sustainable Development. Luxembourg: Office for Official Publications of the European Communities.
Παραπομπή Chicago StyleEuropean Commission. Enlargement and Environment: Principles and Recommendations From the European Consultative Forum On the Environment and Sustainable Development. Luxembourg: Office for Official Publications of the European Communities, 1999.
Παραπομπή MLAEuropean Commission. Enlargement and Environment: Principles and Recommendations From the European Consultative Forum On the Environment and Sustainable Development. Luxembourg: Office for Official Publications of the European Communities, 1999.