by Prijono Tjiptoherijanto, S.E, M.A, Ph.D $11.00
by Susmayati, B.A., dkk $6.00
by Drs. Sudiyo $9.00
by Drs. Daryanto $13.00
by Drs. Abdul Chaer $7.00
by Dennis L. Poster $16.00