Lua APA (7ú heag.)

De Bono, E. W. (1999). Six Thinking Hats. Tata McGraw - Hill.

Lua i Stíl Chicago (17ú heag.)

De Bono, Ed Ward. Six Thinking Hats. New Delhi: Tata McGraw - Hill, 1999.

Lua MLA (9ú heag.)

De Bono, Ed Ward. Six Thinking Hats. Tata McGraw - Hill, 1999.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.