Pearce, C. L. (2010). The Drucker Difference: What the world's greatest management thinker means to today's business leaders. New York: McGraw-Hill.
Chicago-tyylinen lähdeviittausPearce, Craig L. The Drucker Difference: What the World's Greatest Management Thinker Means to Today's Business Leaders. New York: McGraw-Hill, 2010.
MLA-viitePearce, Craig L. The Drucker Difference: What the World's Greatest Management Thinker Means to Today's Business Leaders. New York: McGraw-Hill, 2010.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.