by Pindi Kisata, S. Kom $6.00
by Prof. Hazairin, S.H $7.00
by Prof. DR. Taliziduhu Ndraha $11.00
by Drs. Hendrojogi, MSc $11.00
by Prof. Dr. Sondang P. Siagian, M.P.A $11.00
by Drs. Muchdarsyah Sinungan $9.00