Cita APA (7th ed.)

Covey, S. R. (2004). The seven habits of highly effective people ([2nd ed.].). Pocket Books.

Cita Chicago (17th ed.)

Covey, Stephen R. The Seven Habits of Highly Effective People. [2nd ed.]. London: Pocket Books, 2004.

Cita MLA (9th ed.)

Covey, Stephen R. The Seven Habits of Highly Effective People. [2nd ed.]. Pocket Books, 2004.