by Jaelani, S.Si $7.00
by Turban, Rainer $26.00
by R.M. Sumopratomo $6.00
by WK $13.00
by Prof. Dr. Samsuridjal Djauzi, SpPD $5.00
by Prof. dr. D. Bachtiar Lubis, dr. Sylvia D. Elvira $7.00