Gaya APA
Kouzes, J, M., Posner, B, Z.
(2003).
Leadership The Challenge
(
Third Edition)
.
:
Jossey-Bass.USA.
Gaya MLA
Kouzes, James, M.., Posner, Barry, Z..
"Leadership The Challenge".
Third Edition
:
Jossey-Bass.USA,
2003.
Koleksi Elektronik.