Bjornerud, M. (2018). Timefulness: How thinking like a geologist can help save the world. Princeton University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBjornerud, Marcia. Timefulness: How Thinking like a Geologist Can Help Save the World. Princeton: Princeton University Press, 2018.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBjornerud, Marcia. Timefulness: How Thinking like a Geologist Can Help Save the World. Princeton University Press, 2018.
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