APA (7 वां संस्करण) प्रशस्ति पत्र
Spanagel, D. I. (2014). DeWitt Clinton and Amos Eaton: Geology and power in early New York. The Johns Hopkins University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Spanagel, David I. DeWitt Clinton and Amos Eaton: Geology and Power in Early New York. Baltimore, Maryland: The Johns Hopkins University Press, 2014.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Spanagel, David I. DeWitt Clinton and Amos Eaton: Geology and Power in Early New York. The Johns Hopkins University Press, 2014.
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