by Prof. Jan Remmdick $24.00
by Pelangi Sdn. Bhd $5.00
by Dydiet Hardjito $5.00
by Dr. Bustanul Arifin $11.00
by Rimsky K. Judisseno $32.00
by Dr. Lijan Poltak Sinambel, M.M., M.Pd., dkk $9.00
by Muhibbin Syah, M.Ed $9.00
by $7.00
by - $11.00
by Hindah Muaris $7.00
by - $13.00
by Beddy Irawan Maksudi $5.67