Vandeveer,Donald Pierce, C. (2003). The environmental ethics & policy book (Third.). Holly Allen.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVandeveer,Donald Pierce, Christine. The Environmental Ethics & Policy Book. Third. Canada: Holly Allen, 2003.
एमएलए (8वां संस्करण) प्रशस्ति पत्रVandeveer,Donald Pierce, Christine. The Environmental Ethics & Policy Book. Third. Holly Allen, 2003.
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