Kwik, J. (2020). Limitless: Upgrade your brain, learn anything faster, and unlock your exceptional life (1st edition.). Hay House, Inc..
Lua i Stíl Chicago (17ú heag.)Kwik, Jim. Limitless: Upgrade Your Brain, Learn Anything Faster, and Unlock Your Exceptional Life. 1st edition. Carlsbad, California: Hay House, Inc., 2020.
Lua MLA (9ú heag.)Kwik, Jim. Limitless: Upgrade Your Brain, Learn Anything Faster, and Unlock Your Exceptional Life. 1st edition. Hay House, Inc., 2020.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.