John Muir Institute for Environmental Studies and University of New Mexico. (1979). Environmental Ethics. Environmental Philosophy.
Čikaški stil citiranja (17. izdanje)John Muir Institute for Environmental Studies and University of New Mexico. Environmental Ethics. Denton, Tex: Environmental Philosophy, 1979.
MLA način citiranja (8. izdanje)John Muir Institute for Environmental Studies and University of New Mexico. Environmental Ethics. Environmental Philosophy, 1979.
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