Wartzman, R. (2012). What would Drucker do now: Solutions to today's toughest challenges from the father of modern management. McGraw-Hill.
Citace podle Chicago (17th ed.)Wartzman, Rick. What Would Drucker Do Now: Solutions to Today's Toughest Challenges from the Father of Modern Management. New York, NY: McGraw-Hill, 2012.
Citace podle MLA (9th ed.)Wartzman, Rick. What Would Drucker Do Now: Solutions to Today's Toughest Challenges from the Father of Modern Management. McGraw-Hill, 2012.
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