Berpikir di luar kotak: Perbedaan antara revisi
Konten dihapus Konten ditambahkan
Baris 16:
* Rozaki, Z. (2011). The Big 4 In Life. Jakarta: PT. Elex Media Komputindo.
* [http://www.canadaone.com/ezine/april02/out_of_the_box_thinking.html Exactly what is 'Thinking Outside the Box'?]
* [http://www.daviddarling.info/encyclopedia/D/Dudeney.html Dudeney, Henry Ernest (1857-1930)]
* [http://www-history.mcs.st-and.ac.uk/Biographies/Dudeney.html Henry Ernest Dudeney]
* [http://www.edwarddebono.com/] Edward de Bono's official Website
* [http://www.edwdebono.com/ Edward de Bono]
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