by E.M. Nani Marsudi $6.00
by Marihot P. Siahaan, S.E. $12.00
by Dr. Ahmad Jayadi, M.Pd $7.00
by Aloys Budi Purnomo, Pr. $4.00
by Drs. Samsul Munir Amin, M.A $7.00
by Agus M. Hardjana $6.00