ProQuest (Firm) & Boylan, M. (2014). Environmental ethics. Wiley-Blackwell.
Chicago Style (17. basım) AtıfProQuest (Firm) ve Michael Boylan. Environmental Ethics. Chichester, England: Wiley-Blackwell, 2014.
MLA (9th ed.) AtıfProQuest (Firm) ve Michael Boylan. Environmental Ethics. Wiley-Blackwell, 2014.
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