APA-čujuhus (7. p.)
Witzig, F. T. (2004). Voyageurs National Park: The battle to create Minnesota's national park. University of Minnesota Press.
Chicago-čujuhus (17. p.)
Witzig, Fred T. Voyageurs National Park: The Battle to Create Minnesota's National Park. Minneapolis: University of Minnesota Press, 2004.
MLA-čujuhus (9. p.)
Witzig, Fred T. Voyageurs National Park: The Battle to Create Minnesota's National Park. University of Minnesota Press, 2004.
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