Gaya APA
Words of Wisdom Leadership. (2008).
Jakarta:
Esensi.
Gaya Chicago
Words of Wisdom Leadership.
.
Jakarta:
Esensi,
2008.
Text.
Gaya MLA
Words of Wisdom Leadership.
.
Jakarta:
Esensi,
2008.
Text.
Gaya Turabian
Words of Wisdom Leadership.
Jakarta:
Esensi,
2008.
Print.