by Drs. Ibnu Syamsi, S.U $6.00
by Drs. Amin Widjaja Tunggal, Ak., M.B.A $6.00
by Dr. Lijan Poltak Sinambel, M.M., M.Pd., dkk $9.00
by Elizabeth E. Graves $12.00
by Hiro Tugiman $11.00
by Drs. H. Malayu S.P. Hasibuan $7.00
by Tio Tek Hong $7.00