Cita APA (7th ed.)
Olson, S. F., & Backes, D. (2001). The meaning of wilderness: Essential articles and speeches. University of Minnesota Press.
Cita Chicago (17th ed.)
Olson, Sigurd F., i David Backes. The Meaning of Wilderness: Essential Articles and Speeches. Minneapolis: University of Minnesota Press, 2001.
Cita MLA (9th ed.)
Olson, Sigurd F., i David Backes. The Meaning of Wilderness: Essential Articles and Speeches. University of Minnesota Press, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.