by Pandji Anoraga, S.E, M.M $6.00
by N. John Myer $12.00
by Prof. Dr. Sondang P. Siagian, M.P.A $7.00
by N. Suparni, S.H dan DR. Andi Hamzah, S.H $11.00
by Drs. Ishak Farid $6.00
by Drs. Daryanto $7.00