Mills, J. E. (2024). The adventure gap: Changing the face of the outdoors (10th anniversary edition.). Mountaineers Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMills, James Edward. The Adventure Gap: Changing the Face of the Outdoors. 10th anniversary edition. Seattle, WA: Mountaineers Books, 2024.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMills, James Edward. The Adventure Gap: Changing the Face of the Outdoors. 10th anniversary edition. Mountaineers Books, 2024.
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