Kwik, J. (2020). Limitless: Upgrade your brain, learn anything faster, and unlock your exceptional life (1st edition.). Hay House, Inc..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Kwik, Jim. Limitless: Upgrade Your Brain, Learn Anything Faster, and Unlock Your Exceptional Life. 1st edition. Carlsbad, California: Hay House, Inc., 2020.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Kwik, Jim. Limitless: Upgrade Your Brain, Learn Anything Faster, and Unlock Your Exceptional Life. 1st edition. Hay House, Inc., 2020.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.