by Muhammad Ibrahim Saliim $6.00
by Dr. K.H. Didin Hafidhuddin, M.Sc dan Hendri Tanjung, S.Si., M.M. $9.00
by $4.00
by Prof. Dr. Soekartawi $7.00
by Dr. Tom Jacobs, SJ. $8.00
by Ir. Heri Purnama $11.00
by Ir. Heinz Frick $6.00
by Nursalam $9.00
by WK $13.00
by Sufi S.Y. $11.00