by Miftah Thoha $7.00
by Ali M.A. Rachman $7.59
by Prof. Dr. Sondang P. Siagian, M.P.A $9.00
by F. Suryatmo $9.00
by - $18.00
by Tung Desem Waringin $13.00
by Prof. Drs. H.A.W. Widjaja $6.00