De Bono, E. (1993). Sur/petition: Creating value monopolies when everyone else is merely competing. HarperBusiness, Profile Books.
Citazione stile Chigago Style (17a edizione)De Bono, Edward. Sur/petition: Creating Value Monopolies When Everyone Else Is Merely Competing. New York, NY : London: HarperBusiness, Profile Books, 1993.
Citatione MLA (8a ed.)De Bono, Edward. Sur/petition: Creating Value Monopolies When Everyone Else Is Merely Competing. HarperBusiness, Profile Books, 1993.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.