by Steven D. Levitt & Stephen J. Dubner
$11.00

by Drs. G. Kartasapoetra
$7.00

by Prof. Drs. H. Lili M. Sadeli, M.Pd
$9.00

by Sulistyowati Irianto, Antonius Cahyadi
$18.00

by Klaus G. Johannsen
$9.00

by Dydiet Hardjito
$5.00