by Ir. H. Rahmat Rukmana $6.00
by AAK $7.00
by H. Rahmat Rukmana & Hj. Yuyun Yuniarsih, SP., MBA., MM $6.00
by Bambang Sunggono $9.00
by Prof. Dr. Ir. Ali Khomsan $9.00
by Wibowo $12.00