Drucker, P. (2005). Managing for results and managing for future. Butterworth.
शिकागो स्टाइल उद्धरणDrucker, Peter.F. Managing for Results and Managing for Future. Butterworth, 2005.
एमएलए उद्धरणDrucker, Peter.F. Managing for Results and Managing for Future. Butterworth, 2005.
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