by Koirudin $7.00
by Bambang Soepeno, M.Pd $9.00
by Prof. DR. Taliziduhu Ndraha $12.00
by - $9.00
by Victor Situmorang, S.H $6.00
by Drs. Amin Widjaja Tunggal, Ak., M.B.A $7.00