Gaya APA
Covey, Stephen R. (2004).
The 7 Habits of Highly Effective People : Restoring the Character Ethic .
United States of America:
Free Press.
Gaya Chicago
Covey, Stephen R.
The 7 Habits of Highly Effective People : Restoring the Character Ethic.
United States of America:
Free Press,
2004.
Teks.
Gaya MLA
Covey, Stephen R.
The 7 Habits of Highly Effective People : Restoring the Character Ethic.
United States of America:
Free Press,
2004.
Teks.
Gaya Turabian
Covey, Stephen R.
The 7 Habits of Highly Effective People : Restoring the Character Ethic.
United States of America:
Free Press,
2004.
Teks.