by Prof. Dr. H. Jalaluddin
$7.00

by Prof. H.M. Arifin, M.Ed
$9.00

by Prof. Dr. H. Abuddin Nata, M.A
$11.00

by M. Linggar Anggoro
$12.00

by Drs. Tgk. H.Z.A. Syihab
$6.00

by G. Kartasapoetra dan Dra. Hartini
$13.00