Usher, P. J. (1971). Fur trade posts of the Northwest Territories, 1870-1970. Northern Science Research Group, Dept. of Indian Affairs and Northern Development.
Chicago Style (17th ed.) CitationUsher, Peter J. Fur Trade Posts of the Northwest Territories, 1870-1970. Ottawa: Northern Science Research Group, Dept. of Indian Affairs and Northern Development, 1971.
MLA (8th ed.) CitationUsher, Peter J. Fur Trade Posts of the Northwest Territories, 1870-1970. Northern Science Research Group, Dept. of Indian Affairs and Northern Development, 1971.
Warning: These citations may not always be 100% accurate.