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

by Prof. Dr. H. Abdurrahmat Fathoni, M.Si
$7.00

by Dr. H. Abuddin Nata, MA
$6.00

by Slameto
$9.00

by Miller, Mary Susan, Ph.D
$0.00

by Mukbaer Pakkanna & Nur Achmad (Editor)
$11.00