Van der Ploeg, R., & Withagen, C. (2010). Is there really a green paradox? University of Oxford.
Cita Chicago (17th ed.)Van der Ploeg, R., i C. Withagen. Is There Really a Green Paradox? University of Oxford, 2010.
Cita MLA (9th ed.)Van der Ploeg, R., i C. Withagen. Is There Really a Green Paradox? University of Oxford, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.