APA citiranje
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 citiranje
De Bono, Edward. Six Thinking Hats. 1st Back Bay pbk. ed., rev. and updated. Back Bay Books, 1999.
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