by Dr. Ir. Muhammad Rasyaf, MS $7.00
by Drs. Harjanto $9.00
by Drs. Amin Widjaja Tunggal, Ak., M.B.A $6.00
by Prof. J. Supranto, M.A., APU $11.00
by Prof. S.H. Rewoldt, Terj. Drs. A.H. Ali $7.00
by Drs. Amin Wijaja Tunggal, M.B.A $6.00