by Djohan Qoyim $5.00
by Aziz Alimul $7.00
by Neil F. Gordon MD $6.00
by Abdul Mujib, Jusuf Mudzakir $9.00
by Prof. DR. dr. S.M. Lumbantobing, SpS(K), SpKJ $6.00
by M. Ali Hasan $6.00