Walton, Richard E.
Addison-Wesley, 1969
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Reardon, Kathleen Kelley
Currency and Doubleday, 2001
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Downs, Lisa J.
American Society for Training & Development, 2009
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Shearouse, Susan H.
[American Management Association;, ], 2011
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Maxwell, John C.
Menuju Insan Cemerlang, 2014
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