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.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Sibley, 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.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Sibley, 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.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.