by Leden Marpaung, S.H. $7.00
by Yusuf Shofie, S.H. $6.00
by Prof. Abdulkadir Muhammad, S.H. $5.00
by Tim Redaksi Tatanusa $11.00
by H. Salim HS. S.H., M.S. $11.00
by Ir. Sujamto $9.00
by Prof. Dr. Sondang P. Siagian, M.P.A $7.00
by Colin Coulson - Thomas $9.00
by $9.00
by $6.00
by Muna Haddad Yakan $5.00
by Setiyanto $5.00