Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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