Gaya APA
Covey, Stephen R.. (1989).
The 7 Habits Of Highly Effective People: Powerful Lessons In Personal Change .
New York:
Simon & Schuster.
Gaya Chicago
Covey, Stephen R..
The 7 Habits Of Highly Effective People: Powerful Lessons In Personal Change.
New York:
Simon & Schuster,
1989.
Text.
Gaya MLA
Covey, Stephen R..
The 7 Habits Of Highly Effective People: Powerful Lessons In Personal Change.
New York:
Simon & Schuster,
1989.
Text.
Gaya Turabian
Covey, Stephen R..
The 7 Habits Of Highly Effective People: Powerful Lessons In Personal Change.
New York:
Simon & Schuster,
1989.
Print.