Traer, R. (2020). Doing environmental ethics (Third edition.). Routledge.
Chicago-viite (17. p.)Traer, Robert. Doing Environmental Ethics. Third edition. New York, Abingdon, Oxon: Routledge, 2020.
MLA-viite (9. p.)Traer, Robert. Doing Environmental Ethics. Third edition. Routledge, 2020.
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