Heppell, M. (2011). How to be brilliant: Change your ways in 90 days! (3rd ed.). Pearson.
Lua i Stíl Chicago (17ú heag.)Heppell, Michael. How to Be Brilliant: Change Your Ways in 90 Days! 3rd ed. Harlow, England ; New York: Pearson, 2011.
Lua MLA (8ú heag.)Heppell, Michael. How to Be Brilliant: Change Your Ways in 90 Days! 3rd ed. Pearson, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.