Pearce, C. L. (2010). The Drucker difference: What the Word`s greatest management thinker means to today`s business leaders. Tata McGraw Hill Publ.
Lua i Stíl Chicago (17ú heag.)Pearce, Craig L. The Drucker Difference: What the Word`s Greatest Management Thinker Means to Today`s Business Leaders. New delhi: Tata McGraw Hill Publ, 2010.
Lua MLA (9ú heag.)Pearce, Craig L. The Drucker Difference: What the Word`s Greatest Management Thinker Means to Today`s Business Leaders. Tata McGraw Hill Publ, 2010.
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