Collins, B., & Sibley, D. (2010). Bright wings: An illustrated anthology of poems about birds. Columbia University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCollins, Billy, और David Sibley. Bright Wings: An Illustrated Anthology of Poems About Birds. New York: Columbia University Press, 2010.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCollins, Billy, और David Sibley. Bright Wings: An Illustrated Anthology of Poems About Birds. Columbia University Press, 2010.
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