McIntyre, R., & Bekoff, M. (2020). The reign of Wolf 21: The saga of Yellowstone's legendary Druid pack. Greystone Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMcIntyre, Rick, और Marc Bekoff. The Reign of Wolf 21: The Saga of Yellowstone's Legendary Druid Pack. Vancouver ; Berkeley: Greystone Books, 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMcIntyre, Rick, और Marc Bekoff. The Reign of Wolf 21: The Saga of Yellowstone's Legendary Druid Pack. Greystone Books, 2020.
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