by Dr. K.H. Didin Hafidhuddin, M.Sc $9.00
by Dr. Emmanuel Subangun $4.00
by Dr. Muhammad bin Abd $5.00
by $5.00
by Dr. M. Umer Chapra $9.00
by K.H. Abdullah Gymnastiar $6.00
by Bruce Herrick dan Charles P. Kindleberger $12.00