Hannah, S. (2019). How to hold a grudge: From resentment to contentment : the power of grudges to transform your life (First Scribner hardcover edition.). Scribner.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Hannah, Sophie. How to Hold a Grudge: From Resentment to Contentment : The Power of Grudges to Transform Your Life. First Scribner hardcover edition. New York: Scribner, 2019.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Hannah, Sophie. How to Hold a Grudge: From Resentment to Contentment : The Power of Grudges to Transform Your Life. First Scribner hardcover edition. Scribner, 2019.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.