by Ir. M. Iqbal Hasan $11.00
by Frank Bettger $9.00
by Wiwoho Soedjono, S.H $7.00
by Bilson Simamora $11.00
by Bachrawi Sanusi $9.00
by Harry Simons $12.00
by Drs. Amin Widjaja Tunggal, Ak., M.B.A $7.00
by Mark B. Woodhouse $9.00