Covey, S. R. (2001). The 7 habits of highly effective people (Unabridged.). Simon & Schuster Audio.
Cita Chicago Style (17a ed.)Covey, Stephen R. The 7 Habits of Highly Effective People. Unabridged. New York: Simon & Schuster Audio, 2001.
Cita MLA (8a ed.)Covey, Stephen R. The 7 Habits of Highly Effective People. Unabridged. Simon & Schuster Audio, 2001.
Precaución: Estas citas no son 100% exactas.