by Lismidar, H. $5.00
by Aziz Alimul $9.00
by Prof. dr. Arjatmo Tjokronegoro, Ph.D $5.00
by Brooks $20.00
by dr. Titi Lestari Sugito, SpKK(K) $7.00
by Prof. DR. dr. S.M. Lumbantobing, SpS(K), SpKJ $7.00