by Prof. Dr. S. Nasution, M.A.
$9.00

by Drs. Amin Widjaja Tunggal, Ak., M.B.A
$12.00

by Sitor Situmorang
$30.00

by Clara Ng
$6.00

by Prof. Dr. dr. Siti A. Boediardja, dr. Titi Lestari Sugito
$7.00

by JOKO SYAHBAN
$7.00