by Drs. Ibnu Syamsi, S.U $9.00
by Dra. L. Simanjuntak $9.00
by DR. Farida Yusuf Tayibnapis, M.Pd $7.00
by Drs. Firman B. Aji dan Drs. Martin Sirait $9.00
by Drs. Herman Darmawi $9.00
by Drs. Burhanuddin Salam $9.00