Ehrlich, P. R., Dobkin, D. S., & Wheye, D. (1988). The birder's handbook: A field guide to the natural history of North American birds : including all species that regularly breed north of Mexico. Simon & Schuster.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEhrlich, Paul R., David S. Dobkin, और Darryl Wheye. The Birder's Handbook: A Field Guide to the Natural History of North American Birds : Including All Species That Regularly Breed North of Mexico. New York: Simon & Schuster, 1988.
एमएलए (9वां संस्करण) प्रशस्ति पत्रEhrlich, Paul R., et al. The Birder's Handbook: A Field Guide to the Natural History of North American Birds : Including All Species That Regularly Breed North of Mexico. Simon & Schuster, 1988.
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