by Garrett Sutton, ESQ. $11.00
by Bilson Simamora $11.00
by Sofyan Syafri Harahap $13.00
by Prof. Dr. Sondang P. Siagian, M.P.A $9.00
by Prof. Dr. Sudarwan Danim $9.00
by Dra. Sutratinah Tirtonegoro $7.00