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Dyfyniad Arddull ChicagoOgle, Richard. Smart World: Breakthrough Creativity and the New Science of Ideas. Boston, Mass: Harvard Business School Press, 2007.
Dyfyniad MLAOgle, Richard. Smart World: Breakthrough Creativity and the New Science of Ideas. Boston, Mass: Harvard Business School Press, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.