by Drs. Abdullah Ali, Drs. Misbandono, dan Ir. Eny Rahma $7.00
by Drs. Daryanto $6.00
by Sardono Syarief $6.00
by Drs. B. Suryosubroto $9.00
by Pandji Anoraga, S.E, M.M $9.00
by Redaksi Rineka Cipta $18.00