Van der Ploeg, R., & Withagen, C. (2010). Is there really a green paradox? University of Oxford.
Čikaški stil citiranja (17. izdanje)Van der Ploeg, R., i C. Withagen. Is There Really a Green Paradox? University of Oxford, 2010.
MLA način citiranja (9. izdanje)Van der Ploeg, R., i C. Withagen. Is There Really a Green Paradox? University of Oxford, 2010.
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