Oregon Historical Society, Peabody Museum of Archaeology and Ethnology, Vaughan, T., & Holm, B. (1982). Soft gold: The fur trade & cultural exchange on the northwest coast of America. Oregon Historical Society.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOregon Historical Society, Peabody Museum of Archaeology and Ethnology, Thomas Vaughan, और Bill Holm. Soft Gold: The Fur Trade & Cultural Exchange on the Northwest Coast of America. [Portland]: Oregon Historical Society, 1982.
एमएलए (8वां संस्करण) प्रशस्ति पत्रOregon Historical Society, et al. Soft Gold: The Fur Trade & Cultural Exchange on the Northwest Coast of America. Oregon Historical Society, 1982.
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