Citazione Stile APA (7a Edizione)

Olson, S. F., & Backes, D. (2001). The meaning of wilderness: Essential articles and speeches. University of Minnesota Press.

Citazione stile Chigago Style (17a edizione)

Olson, Sigurd F., e David Backes. The Meaning of Wilderness: Essential Articles and Speeches. Minneapolis: University of Minnesota Press, 2001.

Citatione MLA (9a ed.)

Olson, Sigurd F., e David Backes. The Meaning of Wilderness: Essential Articles and Speeches. University of Minnesota Press, 2001.