Gould, S. J. (1990). Wonderful life: The Burgess Shale and the nature of history. Norton.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGould, Stephen Jay. Wonderful Life: The Burgess Shale and the Nature of History. New York: Norton, 1990.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGould, Stephen Jay. Wonderful Life: The Burgess Shale and the Nature of History. Norton, 1990.
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