by Buckle, K.A., dkk $7.00
by Dra. Wiwi Isnaeni, M.S $11.00
by Ny. Susmayati, B.A $7.00
by Iskandar Kanna $7.00
by Ir. Abbas Siregar Djarijah & Ir. Harsono Puspowardoyo $6.00
by Drs. Daryanto $6.00