Cita APA (7th ed.)
Witzig, F. T. (2004). Voyageurs National Park: The battle to create Minnesota's national park. University of Minnesota Press.
Cita Chicago (17th ed.)
Witzig, Fred T. Voyageurs National Park: The Battle to Create Minnesota's National Park. Minneapolis: University of Minnesota Press, 2004.
Cita MLA (9th ed.)
Witzig, Fred T. Voyageurs National Park: The Battle to Create Minnesota's National Park. University of Minnesota Press, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.