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.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Pearce, Craig L., Joseph A. Marciariello, و Hideki Yamawaki. The Drucker Difference: What the World's Greatest Management Thinker Means to Today's Businesss Leader. New York: McGraw-Hill, 2010.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Pearce, Craig L., et al. The Drucker Difference: What the World's Greatest Management Thinker Means to Today's Businesss Leader. McGraw-Hill, 2010.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.