by K. Svalastoga $7.00
by - $20.00
by Drs. Ec. Alex. S. Nitisemito dan Drs. M. Umar Burham. M.S $6.00
by Steve Kaplan $11.00
by Edilius, S.E dan Drs. Sudarsono, S.H., M.Si $9.00
by Karl May $6.00