Nisbet, J. (1994). Sources of the river: Tracking David Thompson across western North America. Sasquatch Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNisbet, Jack. Sources of the River: Tracking David Thompson Across Western North America. Seattle: Sasquatch Books, 1994.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNisbet, Jack. Sources of the River: Tracking David Thompson Across Western North America. Sasquatch Books, 1994.
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