The Bono's Six Thinking Hat - Novi Harsono's Website
De Bono's Six Hats | HIGHLAND LITERACY
The six thinking hats of De Bono
Figure 1 from Using De Bono's Six Thinking Hats Model to Teach Critical Thinking and Problem Solving Skills Essential for Success in the 21st Century Economy | Semantic Scholar
The Bono's Six Thinking Hat - Novi Harsono's Website