Economic comission for Europe. (2003). Environmental policy in transition: Ten years of unece environmental performance reviews.
Cita Chicago (17th ed.)Economic comission for Europe. Environmental Policy in Transition: Ten Years of Unece Environmental Performance Reviews. 2003.
Cita MLA (9th ed.)Economic comission for Europe. Environmental Policy in Transition: Ten Years of Unece Environmental Performance Reviews. 2003.
Atenció: Aquestes cites poden no estar 100% correctes.