by Drs. Mardalis $6.00
by Drs. Husein Umar, S.E., M.M., MBA $7.00
by Arief, Sritua dan Adi Sasono $5.00
by Drs. H. Malayu S.P. Hasibuan $11.00
by Squire, Lyn $6.00
by $11.00