APA Style

Keefer, E, C, (., Keefer, E, C, D, S, P. (). Forex On-line Trading : Tren Investasi Masa Kini . Jakarta: .

MLA Style

Keefer, Edward, C., (Ed.)., Keefer, Edward, C.;, David, S., Patterson. "Forex On-line Trading : Tren Investasi Masa Kini". Jakarta: , . Text.