APA (7th ed.) Citation

De Bono, E. (1990). Conflicts: : a better way to resolve them (Repr. of the first print by Pelican books in 1986.). Penguin books.

Chicago Style (17th ed.) Citation

De Bono, Edward. Conflicts: : A Better Way to Resolve Them. Repr. of the first print by Pelican books in 1986. London: Penguin books, 1990.

MLA (9th ed.) Citation

De Bono, Edward. Conflicts: : A Better Way to Resolve Them. Repr. of the first print by Pelican books in 1986. Penguin books, 1990.