Tracy, B. (2012). The power of self-confidence: Become unstoppable, irresistible, and unafraid in every area of your life (Unabridged.). Ascent Audio.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Tracy, Brian. The Power of Self-confidence: Become Unstoppable, Irresistible, and Unafraid in Every Area of Your Life. Unabridged. Rego Park: Ascent Audio, 2012.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Tracy, Brian. The Power of Self-confidence: Become Unstoppable, Irresistible, and Unafraid in Every Area of Your Life. Unabridged. Ascent Audio, 2012.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.