APA-ийн эшлэл(7 дахь хэвлэлт)

ebrary, Inc, 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.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

ebrary, Inc, Judith Hudson Beattie, ба Helen M. Buss. Undelivered Letters to Hudson's Bay Company Men on the Northwest Coast of America, 1830-57. Vancouver: UBC Press, 2003.

MLA -ийн эшлэл (9 дэх хэвлэлт)

ebrary, Inc, et al. Undelivered Letters to Hudson's Bay Company Men on the Northwest Coast of America, 1830-57. UBC Press, 2003.