by A. Gunawan Admiranto $9.00
by Steven D. Levitt & Stephen J. Dubner $11.00
by Drs. Hendrojogi, MSc $11.00
by Prof. Dr. Sondang P. Siagian, M.P.A $11.00
by Ir. Moehar Daniel, M.S $7.00
by Freddy Rangkuti $9.00
by $6.00
by Nursalam $13.00
by AS Aulina Wahyudin $11.00
by George Elliot $6.00
by Anthony Giddens $6.00
by dr. Titi Lestari Sugito, SpKK(K) $6.00