by Lindholm, Richard W & Hartojo Wignjowijoto $7.00
by Drs. Husein Umar, S.E., M.M., MBA $9.00
by A.H. Manurung, S.E $6.00
by Bilson Simamora $11.00
by Gus tf Sakai $9.00
by Erick Reidenbach $9.00
by Sartono Kartodirdjo $12.00