Sibley, D. (2020). What it's like to be a bird: From flying to nesting, eating to singing -- what birds are doing, and why (First edition.). Alfred A. Knopf.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSibley, David. What It's like to Be a Bird: From Flying to Nesting, Eating to Singing -- What Birds Are Doing, and Why. First edition. New York: Alfred A. Knopf, 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSibley, David. What It's like to Be a Bird: From Flying to Nesting, Eating to Singing -- What Birds Are Doing, and Why. First edition. Alfred A. Knopf, 2020.
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