Gaya APA
Covey, S, R.
(2013).
The 7 Habits of Highly Effective People
(
cet. 1)
.
TANGERANG:
Binarupa Aksara.
Gaya MLA
Covey, Stephen, R..
"The 7 Habits of Highly Effective People".
cet. 1
TANGERANG:
Binarupa Aksara,
2013.
Text.