by Vincent Gaspersz $13.00
by Drs. Amin Widjaja Tunggal, Ak., M.B.A $6.00
by Faqihuddin Abdul Kadir $5.00
by Drs. Abas Kartadinata $7.00
by Drs. Ibnu Syamsi, S.U $9.00
by Richard Denny $7.00