De Bono, E. (2015). Serious creativity. Vermilion.
Lua i Stíl Chicago (17ú heag.)De Bono, Edward. Serious Creativity. London: Vermilion, 2015.
Lua MLA (9ú heag.)De Bono, Edward. Serious Creativity. Vermilion, 2015.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.