APA (7 वां संस्करण) प्रशस्ति पत्र
Gudorf, C. E., & Huchingson, J. E. (2010). Boundaries: A casebook in environmental ethics (2nd ed.). Washington, D.C..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Gudorf, Christine E., और James Edward Huchingson. Boundaries: A Casebook in Environmental Ethics. 2nd ed. Georgetown University Press: Washington, D.C., 2010.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Gudorf, Christine E., और James Edward Huchingson. Boundaries: A Casebook in Environmental Ethics. 2nd ed. Washington, D.C., 2010.
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