Gaya APA
Covey, S.
(2001).
The 7 Habbits of Highly Effective Teens
(
Cet.1)
.
Jakarta:
Binarupa Aksara.
Gaya MLA
Covey, Sean.
"The 7 Habbits of Highly Effective Teens".
Cet.1
Jakarta:
Binarupa Aksara,
2001.
Text.