Gaya APA
semuil, T.
(2012).
to be a Great Effective Leader
(
cet. 1)
.
YOGYAKARTA:
ANDI.
Gaya MLA
semuil, Tjiharjadi.
"to be a Great Effective Leader".
cet. 1
YOGYAKARTA:
ANDI,
2012.
Text.