APA Style
Bono, Edward de.
().
Six Thinking Hats
.
:
.
Chicago Style
Bono, Edward de.
Six Thinking Hats
.
:
,
.
Text.
MLA Style
Bono, Edward de.
Six Thinking Hats
.
:
,
.
Text.
Turabian Style
Bono, Edward de.
Six Thinking Hats
.
:
,
.
Print.