by Isjoni $8.00
by Prof. H.M. Arifin, M.Ed $9.00
by Reynold a. Nicholson $7.00
by Drs. Ibnu Syamsi, S.U $6.00
by Prof. Dr. S. Nasution, M.A. $7.00
by Drs. Abdullah Ali, Drs. Misbandono, dan Ir. Eny Rahma $7.00