Lewis, O. (1942). The effects of white contact upon Blackfoot culture: With special reference to the role of the fur trade .. University of Washington press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLewis, Oscar. The Effects of White Contact upon Blackfoot Culture: With Special Reference to the Role of the Fur Trade .. Seattle: University of Washington press, 1942.
एमएलए (8वां संस्करण) प्रशस्ति पत्रLewis, Oscar. The Effects of White Contact upon Blackfoot Culture: With Special Reference to the Role of the Fur Trade .. University of Washington press, 1942.
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