Gould, S. J. (1987). Time's arrow, time's cycle: Myth and metaphor in the discovery of geological time. Harvard University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGould, Stephen Jay. Time's Arrow, Time's Cycle: Myth and Metaphor in the Discovery of Geological Time. Cambridge, Mass.: Harvard University Press, 1987.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGould, Stephen Jay. Time's Arrow, Time's Cycle: Myth and Metaphor in the Discovery of Geological Time. Harvard University Press, 1987.
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