by Budi Widianarko & Andreas Pandiangan $11.00
by Ernest & Sri Mariyanto $4.00
by Ir. Heinz Frick & Pujo L. Setiawan $7.00
by Ir. H. Rahmat Rukmana & Hj. Yuyun Yuniarsih, SP., MBA., MM. $6.00
by Hiro Tugiman $6.00
by Y.T. Prasetiyo $6.00