by Leden Marpaung, S.H. $9.00
by Dr. Maryaeni, M.Pd $6.00
by Prof. Dr. Umar Fahmi Achmadi, M.P.H., Ph.D $9.00
by Busroh, Ismid D.I $11.00
by Adi Bin Hatim $5.00
by Cucu Cahyana & Yeni Ismayani $11.00