LEAVITT HAROLD J. (2005). TOP DOWN: WHY HIERARCHIES ARE HEART? HARVARD BUSINESS SCHOOL PRESS.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLEAVITT HAROLD J. TOP DOWN: WHY HIERARCHIES ARE HEART? BOSTON: HARVARD BUSINESS SCHOOL PRESS, 2005.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLEAVITT HAROLD J. TOP DOWN: WHY HIERARCHIES ARE HEART? HARVARD BUSINESS SCHOOL PRESS, 2005.
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