European Commission. (1996). 80/51/EEC, Council directive of 20 December 1979 on the limitation of noise emissions from subsonic aircraft: Provisional, unrevised texts : 9 languages. Luxembourg: Office for Official Publications of the European Communities.
Παραπομπή Chicago StyleEuropean Commission. 80/51/EEC, Council Directive of 20 December 1979 On the Limitation of Noise Emissions From Subsonic Aircraft: Provisional, Unrevised Texts : 9 Languages. Luxembourg: Office for Official Publications of the European Communities, 1996.
Παραπομπή MLAEuropean Commission. 80/51/EEC, Council Directive of 20 December 1979 On the Limitation of Noise Emissions From Subsonic Aircraft: Provisional, Unrevised Texts : 9 Languages. Luxembourg: Office for Official Publications of the European Communities, 1996.