by Walker, Edward L
$6.00

by Drs. A.W. Widjaja
$6.00

by Bruce Herrick dan Charles P. Kindleberger
$12.00

by Dra. Moeslichatoen R., M.Pd
$7.00

by Drs. Firman B. Aji dan Drs. Martin Sirait
$9.00

by Prof. Dr. S. Nasution, M.A.
$6.00