by A. W. van den Ban & H. S. Hawkins $12.00
by Ir. H. Rahmat Rukmana, MBA., MSc. $5.00
by Syaiful F. Prihadi $13.00
by Ir. Eddy Afrianto & Ir. Evi Liviawaty $6.00
by Dr. B. Siswanto Sastrohadiwiryo $9.00
by Miles Matthew B. dan A. Michael Huberman $9.00