Wartzman, R. (2012). What would Drucker do now?: Solutions to today's toughest challenges from the father of modern management. McGraw-Hill.
Chicago-Zitierstil (17. Ausg.)Wartzman, Rick. What Would Drucker Do Now?: Solutions to Today's Toughest Challenges from the Father of Modern Management. New York: McGraw-Hill, 2012.
MLA-Zitierstil (9. Ausg.)Wartzman, Rick. What Would Drucker Do Now?: Solutions to Today's Toughest Challenges from the Father of Modern Management. McGraw-Hill, 2012.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.