Schullery, P. (2004). Searching for Yellowstone: Ecology and wonder in the last wilderness. Montana Historical Society Press ; Distributed by the Globe Pequot Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSchullery, Paul. Searching for Yellowstone: Ecology and Wonder in the Last Wilderness. Helena, Mont. : Guilford, Conn.: Montana Historical Society Press ; Distributed by the Globe Pequot Press, 2004.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSchullery, Paul. Searching for Yellowstone: Ecology and Wonder in the Last Wilderness. Montana Historical Society Press ; Distributed by the Globe Pequot Press, 2004.
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