by Radiks Purba $12.00
by Prof. Dr. Sudarwan Danim $11.00
by Drs. Sudarsono, S.H., M.Si $7.00
by Prof. J. Suprapto, M.A. APU $11.00
by Drs. Sriyono, dkk $9.00
by Prof. Dr. Burhanuddin Salam, M.M $7.00