Gaya APA
Covey, Stephen R. (1997).
The seven habits of highly effective people (Cet.1).
Jakarta:
Binarupa aksara.
Gaya Chicago
Covey, Stephen R.
The seven habits of highly effective people.
Cet.1
Jakarta:
Binarupa aksara,
1997.
Text.
Gaya MLA
Covey, Stephen R.
The seven habits of highly effective people.
Cet.1
Jakarta:
Binarupa aksara,
1997.
Text.
Gaya Turabian
Covey, Stephen R.
The seven habits of highly effective people.
Cet.1
Jakarta:
Binarupa aksara,
1997.
Print.