by Marihot P. Siahaan
$16.00

by Herbert G. Hick dan G. Ray Gullet
$20.00

by Drs. Jumingan, S.E., M.M., M.Si
$0.00

by Agustinus Edy Kristianto (ed), A. Patra M. Zen (ed.)
$23.00

by Muhammad Muflih
$7.00

by Prof. Dr. J. Winardi, SE
$9.00