Covey, S. R. (2004). The 7 Habits of Highly Effective People. Pocket Books.
Chicago Style (17th ed.) CitationCovey, Stephen R. The 7 Habits of Highly Effective People. Pocket Books, 2004.
ציטוט MLACovey, Stephen R. The 7 Habits of Highly Effective People. Pocket Books, 2004.
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