Cita APA (7th ed.)
Covey, S. The 7 Habits of Highly Effective Teens: The Ultimate Teenage Success Guide. Touchstone Book.
Cita Chicago (17th ed.)
Covey, Sean. The 7 Habits of Highly Effective Teens: The Ultimate Teenage Success Guide. Nueva York, EUA: Touchstone Book.
Cita MLA (9th ed.)
Covey, Sean. The 7 Habits of Highly Effective Teens: The Ultimate Teenage Success Guide. Touchstone Book.
Atenció: Aquestes cites poden no estar 100% correctes.