by Prof. Dr. Husaini Usman, M.Pd., M.T
$16.00

by Haryoto
$5.00

by Dr. E.G. Brahmaputra Marjadi, M.P.H
$7.00

by Dr. Martin Harun, OFM / LBI
$7.00

by Ir. H. Rahmat Rukmana, MBA., MSc.
$5.00

by Syaiful F. Prihadi
$13.00