Gaya APA
Covey, Stephen R.. (2010).
The 7 Habits of Highly Effective People .
Tangerang:
binarupa aksara.
Gaya Chicago
Covey, Stephen R..
The 7 Habits of Highly Effective People.
Tangerang:
binarupa aksara,
2010.
Text.
Gaya MLA
Covey, Stephen R..
The 7 Habits of Highly Effective People.
Tangerang:
binarupa aksara,
2010.
Text.
Gaya Turabian
Covey, Stephen R..
The 7 Habits of Highly Effective People.
Tangerang:
binarupa aksara,
2010.
Print.