by Jamrin Abubakar $15.00
by Nursisto, Drs. $8.00
by Dr. Ahmad Rofiq, MA $7.00
by Michael White $5.00
by Ir. Setijo Pitojo $6.00
by $20.00
by Prof. Dr. Veithzal Rivai $12.00
by Sanny Poespo $9.00