by Drs. B. Suryosubroto $9.00
by Dr. Hamzah B. Uno, M.Pd $9.00
by Anwar Arifin $6.00
by Drs. H.M. Yusran Asmuni $6.00
by Drs. Badrin Yatim, MA $9.00
by R. Ibrahim dan Nana Syaodih. S $7.00