Gardner, H. (2007). Five minds for the future. Pocket Books Ltd.
Lua i Stíl Chicago (17ú heag.)Gardner, Howard. Five Minds for the Future. London: Pocket Books Ltd, 2007.
Lua MLA (9ú heag.)Gardner, Howard. Five Minds for the Future. Pocket Books Ltd, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.