by Haryoto $5.00
by Yusuf al-Uqshari $7.00
by Michael Keene $7.00
by Dr. K.H. Didin Hafidhuddin, M.Sc dan Hendri Tanjung, S.Si., M.M. $9.00
by Pascal Baylon Ledo Bude $0.00
by Ir. M. Lies Suprapti $6.00