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Dyfyniad Arddull ChicagoFinkelstein Sydney. Why Smart Executives Fail. New York: Penguin Book, 2003.
Dyfyniad MLAFinkelstein Sydney. Why Smart Executives Fail. Penguin Book, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.