by Liberty Pandiangan, S.E $13.00
by Drs. Muchdarsyah Sinungan $9.00
by Aan Rohanah, S.Pd $6.00
by Prof. Dr. H. Abdurrahmat Fathoni, M.Si $6.00
by Drs. M. Dalyono $9.00
by Rasyid Asba $12.00