by Prof. DR. Taliziduhu Ndraha $11.00
by Drs. Sidarta Gautama $7.00
by Drs. Amin Widjaja Tunggal, Ak., M.B.A $12.00
by Prof. Dr. Sudarwan Danim $11.00
by Drs. Hadiyanto, M.Ed $9.00
by Notodihardjo, Hardjono $6.00