by M. Fuad, dkk $11.00
by Drs. Agus M. Hardjana, M.Sc., Ed $6.00
by - $13.00
by Drs. Ahsin W. Al-Hafidz $6.00
by Prof. Dr. H. Zainuddin Ali, M.A $7.00
by Prof. Subowo, dr. M.Sc., Ph.D $9.00