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Dyfyniad Arddull ChicagoGardner, Howard. Five Minds for the Future. Boston, Mass.: Harvard Business School Press, 2007.
Dyfyniad MLAGardner, Howard. Five Minds for the Future. Harvard Business School Press, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.