by Mark Sommer $6.00
by ISEI $18.00
by dr. Boyke Dian Nugraha $7.00
by Ubaidilah Nugraha $9.00
by Stephen K. Sanderson $12.00
by Drs. Husein Umar, S.E., M.M., MBA $9.00
by Prof. Drs. H.A.W. Widjaja $6.00
by $6.00
by Fuad Kauma $7.00
by Prof. Dr. N. Driyarkara, SJ $6.00