by Turban, Rainer $26.00
by Ir. H. Rahmat Rukmana, MBA., M.Sc. & Uu Sugandi Saputra, B.Sc $6.00
by Abdul Kadir $11.00
by Rondang Pasaribu $6.00
by Jaya Chaliha & Edward Le Joly $10.00
by Stallings $18.00