by Ir. H. Sudirman, Mpi & Prof. DR. Ir. Achmad Mellawa $9.00
by Ir. Sujamto $7.00
by Ir. C. Totok Sutrisno $6.00
by Husein Umar $11.00
by Hermawan Kartajaya $16.00
by M. Sofyan $5.00