DRUCKER , P. (1982). THE CHANGING WORLD OF THE EDECUTIVE. TIMES BOOKS.
Cita Chicago (17th ed.)DRUCKER , P.F. THE CHANGING WORLD OF THE EDECUTIVE. NEW YORK: TIMES BOOKS, 1982.
Cita MLA (9th ed.)DRUCKER , P.F. THE CHANGING WORLD OF THE EDECUTIVE. TIMES BOOKS, 1982.
Atenció: Aquestes cites poden no estar 100% correctes.