by WK $16.00
by WK $12.00
by dr. Hartono G., dr. Badriul H., dr. Hanifah O. $9.00
by Prof. DR. dr. S.M. Lumbantobing, SpS(K), SpKJ $6.00
by Ir. Arif Hartoyo, M. S $5.00
by M. Fakhri Husein $12.00