Clark, S. G. (2008). Ensuring greater Yellowstone's future: Choices for leaders and citizens. Yale University Press.
Chicago-Zitierstil (17. Ausg.)Clark, Susan G. Ensuring Greater Yellowstone's Future: Choices for Leaders and Citizens. New Haven, Conn: Yale University Press, 2008.
MLA-Zitierstil (9. Ausg.)Clark, Susan G. Ensuring Greater Yellowstone's Future: Choices for Leaders and Citizens. Yale University Press, 2008.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.