by Drs. Ibnu Syamsi, S.U
$9.00

by Drs. Rusyadi., dkk
$28.00

by Edilius, S.E., dkk
$7.00

by C. Rollin Niswonger
$12.00

by Drs. Sudarsono, S.H., M.Si
$7.00

by A. Tresna Sastrawijaya, M.Sc
$9.00