United States. Army. Corps of Topographical Engineers & Cram, T. J. (1977). Topographical memoir. Ye Galleon Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited States. Army. Corps of Topographical Engineers और Thomas Jefferson Cram. Topographical Memoir. Fairfield, Wash.: Ye Galleon Press, 1977.
एमएलए (8वां संस्करण) प्रशस्ति पत्रUnited States. Army. Corps of Topographical Engineers और Thomas Jefferson Cram. Topographical Memoir. Ye Galleon Press, 1977.
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