APA (7th ed.) Citation

Covey. (1998). The 7 habits of highly effective teens: The ultimate teenage success guide. A Fireside Book.

Chicago Style (17th ed.) Citation

Covey. The 7 Habits of Highly Effective Teens: The Ultimate Teenage Success Guide. New York: A Fireside Book, 1998.

MLA (8th ed.) Citation

Covey. The 7 Habits of Highly Effective Teens: The Ultimate Teenage Success Guide. A Fireside Book, 1998.