by Pandji Anoraga, S.E, M.M $6.00
by Ir. H. Rahmat Rukmana, MBA., MSc. $5.00
by Nurfahmi El Sha\'b $6.00
by Dr. Taufiq asy-Syawi $26.00
by Agus M. Hardjana $6.00
by Abdullah bin Jaarulah $5.00