Bolz, J. A. (1999). Portage into the past: By canoe along the Minnesota-Ontario boundary waters. University of Minnesota Press.
Citace podle Chicago (17th ed.)Bolz, J. Arnold. Portage into the Past: By Canoe Along the Minnesota-Ontario Boundary Waters. Minneapolis, MN: University of Minnesota Press, 1999.
Citace podle MLA (9th ed.)Bolz, J. Arnold. Portage into the Past: By Canoe Along the Minnesota-Ontario Boundary Waters. University of Minnesota Press, 1999.
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