Ruiz, M., Jr, & Emrys, B. (2018). The three questions: How to discover and master the power within you (First edition.). HarperOne, an imprint of HarperCollinsPublishers.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ruiz, Miguel, Jr, و Barbara Emrys. The Three Questions: How to Discover and Master the Power Within You. First edition. New York, NY: HarperOne, an imprint of HarperCollinsPublishers, 2018.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Ruiz, Miguel, Jr, و Barbara Emrys. The Three Questions: How to Discover and Master the Power Within You. First edition. HarperOne, an imprint of HarperCollinsPublishers, 2018.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.