by Mira W. $7.00
by Prof. Dr. Zuhal M.Sc.EE & Ir. Zhanggischan $36.00
by Beatrice Sparks $9.00
by Sisca Soewitomo $16.00
by Haryanto Makmoer $13.00
by Yori Antar, Raudia K., dkk $33.00