by Muh. Hasan Buraighisy $6.00
by H. Unus Suriawira $0.00
by Prof. Dr. M. Mutawalli asy-Sya'rawi $12.00
by Ir. Bambang Cahyono $7.00
by Ir. Rudy Gunawan $5.00
by John Gottman, Ph.D. $9.00