Cites del registre

Cita APA (7th ed.)
Covey R. Stephen. (1997). The 7 habits of highly effective people. Pocket Books.
Cita Chicago (17th ed.)
Covey R. Stephen. The 7 Habits of Highly Effective People. London: Pocket Books, 1997.
Cita MLA (9th ed.)
Covey R. Stephen. The 7 Habits of Highly Effective People. Pocket Books, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.