Cita APA (7th ed.)

Bono, E. d. (2000). Six Thinking Hats: The multi-million bestselling guide to running better meetings and making faster decisions. Penguin Life.

Cita Chicago (17th ed.)

Bono, Edward de. Six Thinking Hats: The Multi-million Bestselling Guide to Running Better Meetings and Making Faster Decisions. UK: Penguin Life, 2000.

Cita MLA (9th ed.)

Bono, Edward de. Six Thinking Hats: The Multi-million Bestselling Guide to Running Better Meetings and Making Faster Decisions. Penguin Life, 2000.