Geological Survey (U.S.). Water Resources Division. (1981). Water resources data. Water Resources Division, U.S. Geological Division].
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGeological Survey (U.S.). Water Resources Division. Water Resources Data. [Tacoma, Wash.: Water Resources Division, U.S. Geological Division], 1981.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGeological Survey (U.S.). Water Resources Division. Water Resources Data. Water Resources Division, U.S. Geological Division], 1981.
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