by Halimuddin, S.H $7.00
by Heilbroner, Robert L $9.00
by Drs. Domi C. Matutina $12.00
by Drs. Husein Umar, S.E., M.M., MBA $9.00
by Sagimun MD $7.00
by Ghufron A. Mas;adi $7.00