Harms, U., Koeberl, C., & Zoback, M. D. (2007). Continental Scientific Drilling: A Decade of Progress, and Challenges for the Future. Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-540-68778-8
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, Heidelberg: Springer Berlin Heidelberg, 2007. https://doi.org/10.1007/978-3-540-68778-8.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHarms, Ulrich, et al. Continental Scientific Drilling: A Decade of Progress, and Challenges for the Future. Springer Berlin Heidelberg, 2007. https://doi.org/10.1007/978-3-540-68778-8.
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