BONO EDWARD DE. (1990). LATERAL THINKING: TEXTBOOK OF CREATIVITY. PENFUIN BOOKS.
Cita Chicago (17th ed.)BONO EDWARD DE. LATERAL THINKING: TEXTBOOK OF CREATIVITY. ENGLAND: PENFUIN BOOKS, 1990.
Cita MLA (9th ed.)BONO EDWARD DE. LATERAL THINKING: TEXTBOOK OF CREATIVITY. PENFUIN BOOKS, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.