by Leden Marpaung, S.H. $7.00
by R.M. Gatot P. Soemartono, S.E., S.H., M.M. $9.00
by $6.00
by Prof. DR. Sri Redjeki Hartono, SH. $5.00
by - $11.00
by Hasan Musa esh-Shaffar $5.00