Drucker, P. F. (1994). The frontiers of management: Where tomorrow's decisions are being shaped today. Butterworth Heinemann.
Lua i Stíl Chicago (17ú heag.)Drucker, Peter F. The Frontiers of Management: Where Tomorrow's Decisions Are Being Shaped Today. Oxford: Butterworth Heinemann, 1994.
Lua MLA (8ú heag.)Drucker, Peter F. The Frontiers of Management: Where Tomorrow's Decisions Are Being Shaped Today. Butterworth Heinemann, 1994.
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