Des Jardins, J. R. (2001). Environmental ethics: An introduction to environmental philosophy (3rd ed.). Wadsworth Thomson Learning.
Chicago-viite (17. p.)Des Jardins, Joseph R. Environmental Ethics: An Introduction to Environmental Philosophy. 3rd ed. Australia: Wadsworth Thomson Learning, 2001.
MLA-viite (9. p.)Des Jardins, Joseph R. Environmental Ethics: An Introduction to Environmental Philosophy. 3rd ed. Wadsworth Thomson Learning, 2001.
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