by Syam Hardy $7.00
by Prof. Dr. Arjatmo Tjokronegoro, Ph.D., SpAnd. $6.00
by Prof. Dr. dr. H. Dadang Hawari, Psikiater $7.00
by P.L. Chan, MD & GA Taylor, MD $5.00
by Prof. H. Muzzayin Arifin $7.00
by Dr. Farida Rahim, M.Ed $7.00