by WK $13.00
by Drs. Rohadi Abdul Fatah $7.00
by Y.T. Prasetiyo $6.00
by Prof. Dr. Sondang P. Siagian, M.P.A $7.00
by Khairul Basar $11.00
by Prof. Dr. Husaini Usman, M.Pd dan R. Purnomo Setiady Akbar, S.Pd., M.Pd $6.00