Gaya APA
Sitanggang, L, M. et al
(2007).
Forex virtual trading, real income : psycho on trading
.
Yogyakarta:
Andi.
Gaya MLA
Sitanggang, Lucius, M.. et al.
"Forex virtual trading, real income : psycho on trading".
Yogyakarta:
Andi,
2007.
Text.