by Prof. Dr. S. Nasution, M.A.
$7.00

by Prof. Dr. H. Bambang Madiyono, SpJP, SpA(K)
$5.00

by Metropop
$9.00

by Irmansyah Effendi, M.Sc
$6.00

by Vincent Gaspersz
$9.00

by Bagus Tkwin, dkk
$9.00