APA (7 वां संस्करण) प्रशस्ति पत्र

Keller, S. J., & Abdulkareem, T. F. (1980). Post-Knox unconformity--significance at Unionport gas-storage project and relationship to petroleum exploration in Indiana. State of Indiana, Dept. of Natural Resources, Geological Survey.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Keller, Stanley J., और Talal F. Abdulkareem. Post-Knox Unconformity--significance at Unionport Gas-storage Project and Relationship to Petroleum Exploration in Indiana. Bloomington, Ind.: State of Indiana, Dept. of Natural Resources, Geological Survey, 1980.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Keller, Stanley J., और Talal F. Abdulkareem. Post-Knox Unconformity--significance at Unionport Gas-storage Project and Relationship to Petroleum Exploration in Indiana. State of Indiana, Dept. of Natural Resources, Geological Survey, 1980.

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