Palmer, D. (2003). Prehistoric past revealed: The four billion year history of life on Earth. University of California Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPalmer, Douglas. Prehistoric Past Revealed: The Four Billion Year History of Life on Earth. Berkeley: University of California Press, 2003.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPalmer, Douglas. Prehistoric Past Revealed: The Four Billion Year History of Life on Earth. University of California Press, 2003.
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