Gaya APA
Covey, S. (1998).
The 7 Habits of Highly Effective Teensw: The Ultimate Teenage Success Guide .
New York:
A Fireside Book/Simon & Schuster.
Gaya MLA
Covey, Sean.
"The 7 Habits of Highly Effective Teensw: The Ultimate Teenage Success Guide".
New York:
A Fireside Book/Simon & Schuster,
1998.
Book.