APA Style
Sitanggang, L, M., Indrawati, Y. (2007).
Forex; Virtual Trading, Real Income; Psyco On Trading .
Yogyakarta:
Andi Offset.
MLA Style
Sitanggang, Lucius, M.., Indrawati, Yulika.
"Forex; Virtual Trading, Real Income; Psyco On Trading".
Yogyakarta:
Andi Offset,
2007.
Text.