by Prof. Djafaruddin $9.00
by Sudibyo $9.00
by Drs. Djoko Widagdho, dkk $9.00
by Prof. Dr. Sondang P. Siagian, M.P.A $11.00
by Drs. Sudiyono, M.Si $6.00
by KH Husein Muhammad $7.00