Rose, D. L., & Veltkamp, J. (2017). Beauty and the beak: How science, technology, and a 3D-printed beak rescued a bald eagle. Persnickety Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRose, Deborah Lee, और Jane Veltkamp. Beauty and the Beak: How Science, Technology, and a 3D-printed Beak Rescued a Bald Eagle. Apex, NC: Persnickety Press, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRose, Deborah Lee, और Jane Veltkamp. Beauty and the Beak: How Science, Technology, and a 3D-printed Beak Rescued a Bald Eagle. Persnickety Press, 2017.
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