Gaya APA
Covey, Stephen R.. (2004).
The 8th Habit from Effectiveness to Greatness .
New York:
Simon & Schuster MacMillan.
Gaya Chicago
Covey, Stephen R..
The 8th Habit from Effectiveness to Greatness.
New York:
Simon & Schuster MacMillan,
2004.
Buku.
Gaya MLA
Covey, Stephen R..
The 8th Habit from Effectiveness to Greatness.
New York:
Simon & Schuster MacMillan,
2004.
Buku.
Gaya Turabian
Covey, Stephen R..
The 8th Habit from Effectiveness to Greatness.
New York:
Simon & Schuster MacMillan,
2004.
Buku.