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Dyfyniad Arddull ChicagoArnold, Denis Gordon. The Ethics of Global Climate Change. Cambridge, [England]: Cambridge University Press, 2011.
Dyfyniad MLAArnold, Denis Gordon. The Ethics of Global Climate Change. Cambridge University Press, 2011.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.