by Drs. Amin Wijaja Tunggal, M.B.A
$11.00

by Dra. Hj. Etin Solihatin, M.Pd, Rahardjo, S.Pd
$7.00

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

by Ernalia Sri Bintang
$8.00

by Freddy Rangkuti
$9.00

by
$7.00