by Ir. Moehar Daniel, M.S $7.00
by Drs. Daryanto $6.00
by Drs. Surajiyo $9.00
by Prof. Dr. H. Ismail Muhammad Syah, S.H. dkk $11.00
by Robert A. Dahl $9.00
by Loyniwati Kho $6.00