Pojman, L. P., & Pojman, P. (2012). Environmental ethics : readings in theory and application: Readings in theory and application (6th ed.). Wadsworth.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPojman, Louis P., और Paul Pojman. Environmental Ethics : Readings in Theory and Application: Readings in Theory and Application. 6th ed. Boston, Mass.: Wadsworth, 2012.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPojman, Louis P., और Paul Pojman. Environmental Ethics : Readings in Theory and Application: Readings in Theory and Application. 6th ed. Wadsworth, 2012.
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