by Dwi Winarno, S.Pd., M.Si $9.00
by Corine T. Netzer $7.00
by Richard E. Feinberg & Valeriana Kallab $7.00
by Drs. H. Abu Ahmadi $9.00
by Trim Sutidja $7.00
by Prof. Dr. Azhar Arsyad $7.00