by Prof. Dr. Sondang P. Siagian, M.P.A $7.00
by Drs. Agus Sujanto $7.00
by Rafael Raga Maran $9.00
by Dr. Martin Harun, OFM / LBI $7.00
by Zuhairi Miswari $11.00
by St. Darmawijaya, Pr $4.00
by Richard G. Lipsey & Peter O. Steiner $18.00
by Saiful Mujani $12.00
by Ahmad Tohari $11.00