by Ir. Lisdiana Fachruddin $5.00
by Ir. Hieronymus Budi Santoso $6.00
by Ir. Hieronymus Budi Santoso dan Heru Respati $5.00
by Thomas A. N. S $6.00
by H. Rahmat Rukmana $6.00
by N. Wahyu Sulistiyana $4.00