Παραπομπή APA
European Commission. (1994). Waste-water charge schemes in the European Union. Luxembourg: Office for Official Publications of the European Communities.
Παραπομπή Chicago StyleEuropean Commission. Waste-water Charge Schemes in the European Union. Luxembourg: Office for Official Publications of the European Communities, 1994.
Παραπομπή MLAEuropean Commission. Waste-water Charge Schemes in the European Union. Luxembourg: Office for Official Publications of the European Communities, 1994.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.