Drucker, P. F., & Wartzman, R. (2010). The Drucker lectures: Essential lessons on management, society, and economy (First edition.). The Drucker Institute.
Citace podle Chicago (17th ed.)Drucker, Peter F., a Rick Wartzman. The Drucker Lectures: Essential Lessons on Management, Society, and Economy. First edition. New York: The Drucker Institute, 2010.
Citace podle MLA (9th ed.)Drucker, Peter F., a Rick Wartzman. The Drucker Lectures: Essential Lessons on Management, Society, and Economy. First edition. The Drucker Institute, 2010.
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