COVEY, S. R. (1999). The 7 habits of highly effective people: Over 10 million copies sold. London: Simon & Schuster.
Chicago Style CitationCOVEY, Stephen R. The 7 Habits of Highly Effective People: Over 10 Million Copies Sold. London: Simon & Schuster, 1999.
MLA CitationCOVEY, Stephen R. The 7 Habits of Highly Effective People: Over 10 Million Copies Sold. London: Simon & Schuster, 1999.
Warning: These citations may not always be 100% accurate.