by George W. Barclay $7.00
by Dra. Dwi Hayu Agustini, MBA $9.00
by Hawari, Dadang $6.00
by Susmayati, B.A., dkk $7.00
by Ir. C. Totok Sutrisno $6.00
by A.H. Manurung, S.E $6.00