Bono, E. d. (2000). Six Thinking Hats: The multi-million bestselling guide to running better meetings and making faster decisions. Penguin Life.
Цитирование в стиле Чикаго (17-е изд.)Bono, Edward de. Six Thinking Hats: The Multi-million Bestselling Guide to Running Better Meetings and Making Faster Decisions. UK: Penguin Life, 2000.
Цитирование MLA (9-е изд.)Bono, Edward de. Six Thinking Hats: The Multi-million Bestselling Guide to Running Better Meetings and Making Faster Decisions. Penguin Life, 2000.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.