Pearce, C. L., Marciariello, J. A., & Yamawaki, H. (2010). The Drucker difference: What the world's greatest management thinker means to today's businesss leader. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Pearce, Craig L., Joseph A. Marciariello, agus Hideki Yamawaki. The Drucker Difference: What the World's Greatest Management Thinker Means to Today's Businesss Leader. New York: McGraw-Hill, 2010.
Lua MLA (9ú heag.)Pearce, Craig L., et al. The Drucker Difference: What the World's Greatest Management Thinker Means to Today's Businesss Leader. McGraw-Hill, 2010.
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