by Prof. Dr. Sondang P. Siagian, M.P.A $7.00
by Abdurrahman al-Baghdadi $6.00
by Erman Rajagukguk, S.H $6.00
by Drs. Amin Widjaja Tunggal, Ak., M.B.A $9.00
by Anwar Effendi $7.00
by Drs. Bayu Surianingrat $7.00
by - $11.00