Kellert, S. R. (1996). The value of life: Biological diversity and human society. Island Press/Shearwater Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKellert, Stephen R. The Value of Life: Biological Diversity and Human Society. Washington, D.C: Island Press/Shearwater Books, 1996.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKellert, Stephen R. The Value of Life: Biological Diversity and Human Society. Island Press/Shearwater Books, 1996.
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