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.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.