DRUCKER , P. (1982). THE EFFACTIVE EXECUTIVE. PAN BOOKS.
Chicago-čujuhus (17. p.)DRUCKER , P.F. THE EFFACTIVE EXECUTIVE. GREAT BRITAIN: PAN BOOKS, 1982.
MLA-čujuhus (9. p.)DRUCKER , P.F. THE EFFACTIVE EXECUTIVE. PAN BOOKS, 1982.
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