by Ambarini $9.00
by Esti Kinasih $7.00
by Tim Boga GPU $6.00
by Ambarini $6.00
by Prof. Dr. Zuhal M.Sc.EE & Ir. Zhanggischan $36.00
by Helmut Morsbach, dkk $7.00
by Fauz Noor $11.00
by Drs. H. Abu Ahmadi $11.00