Shannon, D. H. (1993). The Utter disaster on the Oregon Trail: The Utter and Van Ornum massacres of 1860. Snake Country Pub..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रShannon, Donald H. The Utter Disaster on the Oregon Trail: The Utter and Van Ornum Massacres of 1860. Caldwell, Idaho: Snake Country Pub., 1993.
एमएलए (8वां संस्करण) प्रशस्ति पत्रShannon, Donald H. The Utter Disaster on the Oregon Trail: The Utter and Van Ornum Massacres of 1860. Snake Country Pub., 1993.
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