Stephen R. Convey. The 7 Habits of Highly Effective People. Simon & Schuster.
Cita Chicago (17th ed.)Stephen R. Convey. The 7 Habits of Highly Effective People. Simon & Schuster.
Cita MLA (9th ed.)Stephen R. Convey. The 7 Habits of Highly Effective People. Simon & Schuster.
Atenció: Aquestes cites poden no estar 100% correctes.