De Bono, E. (2000). Six thinking hats (Revised and updated [edition].). Penguin Life, an Imprint of Penguin Books.
Chicago Style (17th ed.) CitationDe Bono, Edward. Six Thinking Hats. Revised and updated [edition]. [London]: Penguin Life, an Imprint of Penguin Books, 2000.
MLA (9th ed.) CitationDe Bono, Edward. Six Thinking Hats. Revised and updated [edition]. Penguin Life, an Imprint of Penguin Books, 2000.
Warning: These citations may not always be 100% accurate.