Fern, R. L. (2002). Nature, God, and humanity: Envisioning an ethics of nature. Cambridge University Press.
Chicago-viite (17. p.)Fern, Richard L. Nature, God, and Humanity: Envisioning an Ethics of Nature. Cambridge, UK ; New York: Cambridge University Press, 2002.
MLA-viite (9. p.)Fern, Richard L. Nature, God, and Humanity: Envisioning an Ethics of Nature. Cambridge University Press, 2002.
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