Harms, U., Koeberl, C., & Zoback, M. D. (2007). Continental scientific drilling: A decade of progress and challenges for the future. Berlin : Springer.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHarms, Ulrich, Christian Koeberl, और Mark D. Zoback. Continental Scientific Drilling: A Decade of Progress and Challenges for the Future. Berlin : Springer, 2007.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHarms, Ulrich, et al. Continental Scientific Drilling: A Decade of Progress and Challenges for the Future. Berlin : Springer, 2007.
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