APA (7 वां संस्करण) प्रशस्ति पत्र
Macdougall, J. D. (2011). Why geology matters: Decoding the past, anticipating the future. University of California Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Macdougall, J. D. Why Geology Matters: Decoding the Past, Anticipating the Future. Berkeley: University of California Press, 2011.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Macdougall, J. D. Why Geology Matters: Decoding the Past, Anticipating the Future. University of California Press, 2011.
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