by Kadir, Abdul $7.00
by Slamet Soeseno $5.00
by Prof. Dr. Soekartawi $7.00
by Guenther, Ernest $7.00
by Chapra, Steven C. dan P. Canale Raymond $11.00
by Ir. Bambang Cahyono $6.00
by Dellmann, H. Dieter $9.00