by Frans Emanuel da Santo, Pr $6.00
by Angelo Devananda $6.00
by Ir. Adiwarman Karim, SE, MBA, MAEP $7.00
by Drs. Kaelany H.D., M.A $9.00
by Kartini Kartono $11.00
by Qadi 'Iyad Ibn Musa $7.00