BONO EDWARD DE. (1990). LATERAL THINKING: TEXTBOOK OF CREATIVITY. PENFUIN BOOKS.
Chicago-čujuhus (17. p.)BONO EDWARD DE. LATERAL THINKING: TEXTBOOK OF CREATIVITY. ENGLAND: PENFUIN BOOKS, 1990.
MLA-čujuhus (9. p.)BONO EDWARD DE. LATERAL THINKING: TEXTBOOK OF CREATIVITY. PENFUIN BOOKS, 1990.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.