Keinhorst, J. (2003). Environmental-policy co-operation with central and eastern Europe.
Citazione stile Chigago Style (17a edizione)Keinhorst, Jurgen. Environmental-policy Co-operation with Central and Eastern Europe. 2003.
Citatione MLA (9a ed.)Keinhorst, Jurgen. Environmental-policy Co-operation with Central and Eastern Europe. 2003.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.