Drucker, P. F. (2003). Managing oneselfPeter F. Drucker ed.A. Usmara. Amara.
Chicago Style (17th ed.) CitationDrucker, Peter F. Managing OneselfPeter F. Drucker Ed.A. Usmara. Amara, 2003.
MLA citiranjeDrucker, Peter F. Managing OneselfPeter F. Drucker Ed.A. Usmara. Amara, 2003.
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