Van der Ploeg, R., & Withagen, C. (2010). Is there really a green paradox? University of Oxford.
Citazione stile Chigago Style (17a edizione)Van der Ploeg, R., e C. Withagen. Is There Really a Green Paradox? University of Oxford, 2010.
Citatione MLA (9a ed.)Van der Ploeg, R., e C. Withagen. Is There Really a Green Paradox? University of Oxford, 2010.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.