by Prof. Dr. Winardi $9.00
by Hendri F. Isnaeni $4.32
by Hendi Suhendi $9.00
by Drs. Amin Widjaja Tunggal, Ak., M.B.A $7.00
by Ron Tepper $11.00
by Prof. Dr. Sondang P. Siagian, M.P.A $7.00