Covey Stephen R. (2004). Seven habits Of Highly Effective People. Simon Schuster.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCovey Stephen R. Seven Habits Of Highly Effective People. London: Simon Schuster, 2004.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCovey Stephen R. Seven Habits Of Highly Effective People. Simon Schuster, 2004.
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