UNEP. (1997). Global environment out look. Oxford university press.
Chicago Edition CitationUNEP. Global Environment Out Look. NewYork: Oxford university press, 1997.
Deismireacht MLAUNEP. Global Environment Out Look. Oxford university press, 1997.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.