by Sudirman Tebba $5.00
by Prof. Dr. Utami Munandar $11.00
by Abi Abdillah at Tarmidzi $7.00
by Richard G. Lipsey & Peter O. Steiner $16.00
by M. Natsir Arsyad $7.00
by Ir. Yushinta Fujaya, M.Si $7.00
by THOMAS L. HARISON & MARY H. FRAKES $22.00