Bono, E. D. (1990). Lateral Thinking: A text of Creativity (NA.). Penguin Books.
Lua i Stíl Chicago (17ú heag.)Bono, Edward De. Lateral Thinking: A Text of Creativity. NA. England: Penguin Books, 1990.
Lua MLA (9ú heag.)Bono, Edward De. Lateral Thinking: A Text of Creativity. NA. Penguin Books, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.