APA
Edward de Bono, . (1994). Parallel thinking : from socratic thinking to de Bono thinking. Penguin Books, London: .
Chicago
Edward de Bono, . 1994. Parallel thinking : from socratic thinking to de Bono thinking. Penguin Books, London: .
Harvard
Edward de Bono, . (1994). Parallel thinking : from socratic thinking to de Bono thinking. Penguin Books, London: .
MLA
Edward de Bono, . Parallel thinking : from socratic thinking to de Bono thinking. Penguin Books, London: . 1994.