by Tomy Irfani $11.00
by Prof. Dr. Soekartawi $7.00
by Prof. DR. Ir. H. Tridoyo Kusumastanto, MS $9.00
by Drs. D. Ketut Sukardi $9.00
by Abu Abdillah Muhammad Ibn Yusuf Al-Sanusi $6.00
by Louis Irving Horowitz $12.00