by Ir. Hieronymus Budi Santoso $5.00
by Buckle, K.A., dkk $7.00
by Prof. Dr. Suhartono $9.00
by Ir. Setijo Pitojo $9.00
by H. Rahmat Rukmana $5.00
by Setijo Pitojo & Hesti Nira Puspita $12.00