APA (7e ed.) Bronvermelding

DE BONO EDWARD. (1987). LETTERS TO THINKERS: FURTHER THOUGHTS ON LATERAL THINKING. HARRAP LIMITED.

Chicago (17e ed.) Bronvermelding

DE BONO EDWARD. LETTERS TO THINKERS: FURTHER THOUGHTS ON LATERAL THINKING. LONDON: HARRAP LIMITED, 1987.

MLA (9e ed.) Bronvermelding

DE BONO EDWARD. LETTERS TO THINKERS: FURTHER THOUGHTS ON LATERAL THINKING. HARRAP LIMITED, 1987.

Let op: Deze citaties zijn niet altijd 100% accuraat.