Ronald, A. (2003). Reader of the purple sage: Essays on Western writers and environmental literature. University of Nevada Press.
Citace podle Chicago (17th ed.)Ronald, Ann. Reader of the Purple Sage: Essays on Western Writers and Environmental Literature. Reno: University of Nevada Press, 2003.
Citace podle MLA (9th ed.)Ronald, Ann. Reader of the Purple Sage: Essays on Western Writers and Environmental Literature. University of Nevada Press, 2003.
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