DRUCKER PETER F. (2010). CHANGING WORLD OF THE EXECUTIVE. HARVARD BUSINESS.
Chicago Style (17. basım) AtıfDRUCKER PETER F. CHANGING WORLD OF THE EXECUTIVE. BOSTON: HARVARD BUSINESS, 2010.
MLA (9th ed.) AtıfDRUCKER PETER F. CHANGING WORLD OF THE EXECUTIVE. HARVARD BUSINESS, 2010.
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