Covey, S. R. (2001). The 7 habits of highly effective people (Unabridged.). Simon & Schuster Audio.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCovey, Stephen R. The 7 Habits of Highly Effective People. Unabridged. New York: Simon & Schuster Audio, 2001.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCovey, Stephen R. The 7 Habits of Highly Effective People. Unabridged. Simon & Schuster Audio, 2001.
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