Tohutoro APA (7th ed.)
Olson, S. F., & Backes, D. (2001). The meaning of wilderness: Essential articles and speeches. University of Minnesota Press.
Tohutoru Kātū Chicago (17th ed.)
Olson, Sigurd F., me David Backes. The Meaning of Wilderness: Essential Articles and Speeches. Minneapolis: University of Minnesota Press, 2001.
Tohutoro MLA (9th ed.)
Olson, Sigurd F., me David Backes. The Meaning of Wilderness: Essential Articles and Speeches. University of Minnesota Press, 2001.
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