by Anthony De Mello, SJ. $7.00
by Ir. H. Rahmat Rukmana & Hj. Yuyun Yuniarsih, SP., MBA., MM. $6.00
by Ir. Dede Juanda J.S. & Ir. Bambang Cahyono $6.00
by Tanenbaum $16.00
by WK $11.00
by Ir. Hieronymus Budi Santoso $5.00