Gaya APA
Covey, S, R. et al
(2015).
The 7 Habits of Highly Effective People
(
1)
.
Jakarta:
Dunamis Publishing.
Gaya MLA
Covey, Stephen, R.. et al.
"The 7 Habits of Highly Effective People".
1
Jakarta:
Dunamis Publishing,
2015.
Non Fiksi.