by Evelyn L. Billings, Dr $0.00
by Dr. Nico Syukur Dister, OFM. $8.00
by Adi W. Gunawan $11.00
by $4.00
by Dr. Aidh Al-Qami $18.00
by Dr. K.H. Didin Hafidhuddin, M.Sc dan Hendri Tanjung, S.Si., M.M. $9.00