by Hiro Tugiman $6.00
by Prof. Dr. J. Winardi, SE $9.00
by Drs. Husein Umar, S.E., M.M., MBA $9.00
by Johannes Lim $9.00
by Ashadi Siregar & I Made Suarjana $6.00
by Cristina S. Handayani $9.00