De Bono, E. (1978). Opportunities: A handbook of business opportunity search. Associated Business Programmes.
Chicago Style aipamenaDe Bono, Edward. Opportunities: A Handbook of Business Opportunity Search. London: Associated Business Programmes, 1978.
MLA aipamenaDe Bono, Edward. Opportunities: A Handbook of Business Opportunity Search. Associated Business Programmes, 1978.
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