by Prof. DR. dr. S.M. Lumbantobing, SpS(K), SpKJ $6.00
by Nursalam $13.00
by Prof. dr. H. Nurbaiti Iskandar, Sp.THT $5.00
by Ashari, Sumeru $9.00
by Amien, Mohamad Miska $5.00
by Gilian Butler, Tony Hope $13.00