by Kasmir, S.E., M.M $9.00
by Prof. J. Suprapto, M.A. APU $11.00
by Ir. Rustam Hakim, M.T., IALI & Dr. Ing. Ir. Eka SediadiR., IAI $9.00
by $6.00
by Ali Masjono Mukhtar, S.E., M.Bit $7.00
by $5.00