Lieberman, D. (2020). Exercised: Why something we never evolved to do is healthy and rewarding (First edition.). Pantheon Books.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Lieberman, Daniel. Exercised: Why Something We Never Evolved to Do Is Healthy and Rewarding. First edition. New York: Pantheon Books, 2020.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Lieberman, Daniel. Exercised: Why Something We Never Evolved to Do Is Healthy and Rewarding. First edition. Pantheon Books, 2020.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.