Economic comission for Europe. (2003). Environmental policy in transition: Ten years of unece environmental performance reviews.
Citazione stile Chigago Style (17a edizione)Economic comission for Europe. Environmental Policy in Transition: Ten Years of Unece Environmental Performance Reviews. 2003.
Citatione MLA (9a ed.)Economic comission for Europe. Environmental Policy in Transition: Ten Years of Unece Environmental Performance Reviews. 2003.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.