by Daradjadi Gondodiprojo $6.05
by Sofyan Syafri Harahap $7.00
by R. Zein, S.H., M.S $7.00
by Al Ries, Laura Ries $11.00
by Nasruddin Amshary, Sudarsono $14.00
by Prof. Dr. Budi Winarno $9.00