Dyfyniad APA

Helm, D., & Hepburn, C. (2011). The economics and politics of climate change. Oxford University Press.

Dyfyniad Arddull Chicago

Helm, Dieter, and Cameron Hepburn. The Economics and Politics of Climate Change. Oxford ; New York: Oxford University Press, 2011.

Dyfyniad MLA

Helm, Dieter, and Cameron Hepburn. The Economics and Politics of Climate Change. Oxford University Press, 2011.

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