Billsberry, J. (1996). The effective manager: Perspectives and illustrations. Sage Publications in association with the Open University.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBillsberry, Jon. The Effective Manager: Perspectives and Illustrations. London: Sage Publications in association with the Open University, 1996.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBillsberry, Jon. The Effective Manager: Perspectives and Illustrations. Sage Publications in association with the Open University, 1996.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.