by Drs. Inu Kencana Syafiie $9.00
by dr. Ahmad Syauqi Al Fanjari $9.00
by Prof. Dr. Sondang P. Siagian, M.P.A $9.00
by Prof. Dr. Sondang P. Siagian, M.P.A $11.00
by Drs. Ibnu Syamsi, S.U $6.00
by Ali Imron, M.Pd $7.00