by Drs. Amin Widjaja Tunggal, Ak., M.B.A $9.00
by Dr. S. Prawirasusanto, M.Sc., dkk $9.00
by Susmayati, B.A., dkk $6.00
by $13.00
by Bachrawi Sanusi $7.00
by Lembaga Demografi Fakultas Ekonomi UI $6.53