APA (7th ed.) Citation

De Bono, E. (1999). Six thinking hats. 1st Back Bay pbk. ed., rev. and updated. Back Bay Books.

Chicago Style (17th ed.) Citation

De Bono, Edward. Six Thinking Hats. 1st Back Bay Pbk. Ed., Rev. and Updated. Boston: Back Bay Books, 1999.

MLA (9th ed.) Citation

De Bono, Edward. Six Thinking Hats. 1st Back Bay Pbk. Ed., Rev. and Updated. Back Bay Books, 1999.