by Sadono Sukirno $12.00
by Prof. Dr. Husaini Usman, M.Pd & R. Purnomo Setiady Akbar, S.Pd., M.Pd $11.00
by Due, John F $11.00
by Drs. Basir Barthos $9.00
by Dermawan Wibisono $11.00
by Prof. Dr. Mahmud Syaltut $11.00