Drucker, P. F. (1986). Managing for results: Economic tasks and risk-taking decisions (1st Perennial Library ed.). Perennial Library.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDrucker, Peter F. Managing for Results: Economic Tasks and Risk-taking Decisions. 1st Perennial Library ed. New York: Perennial Library, 1986.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDrucker, Peter F. Managing for Results: Economic Tasks and Risk-taking Decisions. 1st Perennial Library ed. Perennial Library, 1986.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.