Welch, J., & Welch, S. (2005). Winning (First International Edition.). HarperBusiness.
Dyfyniad Arddull ChicagoWelch, Jack, and Suzy Welch. Winning. First International Edition. New York: HarperBusiness, 2005.
Dyfyniad MLAWelch, Jack, and Suzy Welch. Winning. First International Edition. HarperBusiness, 2005.
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