Nisbet, J. (2011). Sources of the river: Tracking david thompson across western north america.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNisbet, Jack. Sources of the River: Tracking David Thompson Across Western North America. 2011.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNisbet, Jack. Sources of the River: Tracking David Thompson Across Western North America. 2011.
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