by Prof. Dr. Oemar Hamalik
$7.00

by Ilyas Ismail
$5.00

by Kasmir, S.E., M.M
$7.00

by Kamaruddin Ahmad., S.E
$11.00

by Drs. Nanang Gojali, M.Ag
$7.00

by Drs. Muslih Fathoni, MA
$7.00