by Prof. Dr. Sondang P. Siagian, M.P.A $9.00
by Prof. DR. Sukardjo $7.00
by Fachruddin H.S $18.00
by Ir. Mul Muyani Sutedjo $7.00
by Prof. Drs. H.A.W. Widjaja $6.00
by Ir. Kaslan A. Tohir $12.00
by $12.00
by Susmayati, B.A., dkk $11.00
by A. Dodong Budianto $11.00
by B. Asnawati Z $7.00
by Siti Saidah $6.00
by A. MAKMUR MAKKA $17.00