APA
De Bono E., . (1992). Handbook for the postive revolution. London: Penguin books.
Chicago
De Bono Edward, . 1992. Handbook for the postive revolution. London: Penguin books.
Harvard
De Bono E., . (1992). Handbook for the postive revolution. London: Penguin books.
MLA
De Bono Edward, . Handbook for the postive revolution. London: Penguin books. 1992.
