Kiel, F. (2015). Return on character: The real reason leaders and their companies win. HBR Press.
Chicago-čujuhus (17. p.)Kiel, Fred. Return on Character: The Real Reason Leaders and Their Companies Win. Boston: HBR Press, 2015.
MLA-čujuhus (9. p.)Kiel, Fred. Return on Character: The Real Reason Leaders and Their Companies Win. HBR Press, 2015.
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