Beattie, J. H., & Buss, H. M. (2003). Undelivered letters to Hudson's Bay Company men on the Northwest Coast of America, 1830-57. UBC Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBeattie, Judith Hudson, और Helen M. Buss. Undelivered Letters to Hudson's Bay Company Men on the Northwest Coast of America, 1830-57. Vancouver: UBC Press, 2003.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBeattie, Judith Hudson, और Helen M. Buss. Undelivered Letters to Hudson's Bay Company Men on the Northwest Coast of America, 1830-57. UBC Press, 2003.
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