Polk, M. R. (1979). Bison jump sites in the Northwestern Plains of North America: A locational analysis. [publisher not identified].
Chicago Style (17th ed.) CitationPolk, Michael Robert. Bison Jump Sites in the Northwestern Plains of North America: A Locational Analysis. [Place of publication not identified]: [publisher not identified], 1979.
MLA (9th ed.) CitationPolk, Michael Robert. Bison Jump Sites in the Northwestern Plains of North America: A Locational Analysis. [publisher not identified], 1979.
Warning: These citations may not always be 100% accurate.