Goldfarb, B. (2018). Eager: The surprising, secret life of beavers and why they matter. Chelsea Green Publishing.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGoldfarb, Ben. Eager: The Surprising, Secret Life of Beavers and Why They Matter. White River Junction, Vermont: Chelsea Green Publishing, 2018.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGoldfarb, Ben. Eager: The Surprising, Secret Life of Beavers and Why They Matter. Chelsea Green Publishing, 2018.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.