by Sofyan Syafri Harahap $16.00
by WK $12.00
by Hadi Podo & Joseph J. Sullivan $43.00
by Scott Friedman, CSP $9.00
by Prof. Drs. Piet A. Sahertian $7.00
by $18.00
by Munir Fuady, S.H., M.H., LL..M. $5.00
by $11.00
by Prof. Dr. Sondang P. Siagian, M.P.A $7.00
by Colin Coulson - Thomas $9.00
by Setiyanto $5.00