De Bono, E. (1986). Conflicts: A better way to resolve them. Penguin Books.
Cita Chicago Style (17a ed.)De Bono, Edward. Conflicts: A Better Way to Resolve Them. New Zealand: Penguin Books, 1986.
Cita MLA (8a ed.)De Bono, Edward. Conflicts: A Better Way to Resolve Them. Penguin Books, 1986.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.