DRUCKER, P. F. (1955). The practice of management.: Peter F. Drucker. Pan Books.
Chicago-čujuhus (17. p.)DRUCKER, Peter F. The Practice of Management.: Peter F. Drucker. London: Pan Books, 1955.
MLA-čujuhus (9. p.)DRUCKER, Peter F. The Practice of Management.: Peter F. Drucker. Pan Books, 1955.
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