by Denny J. A $6.00
by Drs. Prathama Rahardja $7.00
by Richard G. Lipsey & Peter O. Steiner $16.00
by Jeffry A. Krames $11.00
by M.L. Jhingan $13.00
by $6.00
by Moch. Faisal Salam, SH., MH. $6.00
by Prof. Dr. S. Nasution, M.A. $7.00
by Hasan Shadily, M.A $12.00
by Mahsun Fuad $11.00
by - $6.00
by Ir. M. Lies Suprapti $6.00