APA Style
Covey, Stephen R.. (1991).
Principle-centered leadership .
New York:
Summit Books.
Chicago Style
Covey, Stephen R..
Principle-centered leadership.
New York:
Summit Books,
1991.
Printed Material.
MLA Style
Covey, Stephen R..
Principle-centered leadership.
New York:
Summit Books,
1991.
Printed Material.
Turabian Style
Covey, Stephen R..
Principle-centered leadership.
New York:
Summit Books,
1991.
Printed Material.