Gaya APA
dkk, S, T.
(2012).
To be a Great Effective Leader
(
cet. 1)
.
Yogyakarta:
ANDI.
Gaya MLA
dkk, Semuil, Tjiharjadi.
"To be a Great Effective Leader".
cet. 1
Yogyakarta:
ANDI,
2012.
Text.