APA-viite (7. p.)
Clark, S. G. (2008). Ensuring greater Yellowstone's future: Choices for leaders and citizens. Yale University Press.
Chicago-viite (17. p.)
Clark, Susan G. Ensuring Greater Yellowstone's Future: Choices for Leaders and Citizens. New Haven, Conn.: Yale University Press, 2008.
MLA-viite (9. p.)
Clark, Susan G. Ensuring Greater Yellowstone's Future: Choices for Leaders and Citizens. Yale University Press, 2008.
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