Farrier, D. (2020). Footprints: In search of future fossils (First edition.). Farrar, Straus and Giroux.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFarrier, David. Footprints: In Search of Future Fossils. First edition. New York: Farrar, Straus and Giroux, 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFarrier, David. Footprints: In Search of Future Fossils. First edition. Farrar, Straus and Giroux, 2020.
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