Gaya APA
Edward de Bono Six Thingking Hats. ().
:
Penguin Books.
Gaya Chicago
Edward de Bono Six Thingking Hats.
.
:
Penguin Books,
.
.
Gaya MLA
Edward de Bono Six Thingking Hats.
.
:
Penguin Books,
.
.
Gaya Turabian
Edward de Bono Six Thingking Hats.
:
Penguin Books,
.
.