by Erica L. Panjaitan $6.00
by Prof. Dr. dr. H. Dadang Hawari, Psikiater $6.00
by Ir. Hatta Sunanta, B.Sc., MS $7.00
by Alex Lanur, OFM $6.00
by $6.00
by Eugene L. Grant. Terj. Drs. E. Komaruddin $13.00