by Budi Winarno $9.00
by Madjid, Abdul & Sri-Edi Swasono $7.00
by Prof. Dr. Husaini Usman, M.Pd & R. Purnomo Setiady Akbar, S.Pd., M.Pd $11.00
by Prijono Tjiptoherijanto, S.E, M.A, Ph.D $11.00
by Dr. Ahmad Hasan $13.00
by AB Susanto $6.00