by J. Price Gittinger $6.00
by Dra. Sri Sundari HS., M.Pd $6.00
by Prof. DR. Taliziduhu Ndraha $11.00
by Vitahealth $9.00
by Radiks Purba $13.00
by Drs. G. Kartasapoetra $7.00
by Dr. Bahder Johan Nasution, S.H., S.M., M.Hum $7.00