Siebert,Horst. (1998). Economics of the environment: Theory and policy (5.). Springer Verlag.
Čikaški stil citiranjaSiebert,Horst. Economics of the Environment: Theory and Policy. 5. Berlin: Springer Verlag, 1998.
MLA način citiranjaSiebert,Horst. Economics of the Environment: Theory and Policy. 5. Springer Verlag, 1998.
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