by H. Rusli, Ronnie $5.00
by Drs. Rusyadi $6.00
by Prof. Dr. Sudarwan Danim $9.00
by Drs. H. Basri Iba Asghary $11.00
by Drs. Mustaqim $7.00
by Prof. DR. Taliziduhu Ndraha $9.00