McGonigal, K. (2012). The willpower instinct: How self-control works, why it matters, and what you can do to get more of it. Avery.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)McGonigal, Kelly. The Willpower Instinct: How Self-control Works, Why It Matters, and What You Can Do to Get More of It. New York: Avery, 2012.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)McGonigal, Kelly. The Willpower Instinct: How Self-control Works, Why It Matters, and What You Can Do to Get More of It. Avery, 2012.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.