Koch, R. (2013). The 80/20 manager: The secret to working less and achieving more. Little, Brown.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKoch, Richard. The 80/20 Manager: The Secret to Working Less and Achieving More. New York: Little, Brown, 2013.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKoch, Richard. The 80/20 Manager: The Secret to Working Less and Achieving More. Little, Brown, 2013.
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