Cita APA (7a ed.)

Covey, S. R. (2020). 7 Habits of Highly Effective People. Simon and Schuster.

Cita Chicago Style (17a ed.)

Covey, Stephen R. 7 Habits of Highly Effective People. New Delhi: Simon and Schuster, 2020.

Cita MLA (9a ed.)

Covey, Stephen R. 7 Habits of Highly Effective People. Simon and Schuster, 2020.