Gaya APA
Covey, Stephen R.. (2004).
The 7 Habits of Highly Effective People: Restoring the Character Ethic .
New York:
The Free Press.
Gaya Chicago
Covey, Stephen R..
The 7 Habits of Highly Effective People: Restoring the Character Ethic.
New York:
The Free Press,
2004.
Buku.
Gaya MLA
Covey, Stephen R..
The 7 Habits of Highly Effective People: Restoring the Character Ethic.
New York:
The Free Press,
2004.
Buku.
Gaya Turabian
Covey, Stephen R..
The 7 Habits of Highly Effective People: Restoring the Character Ethic.
New York:
The Free Press,
2004.
Buku.