http://e-repository.perpus.iainsalatiga.ac.id/16277
http://e-repository.perpus.iainsalatiga.ac.id/16290
http://e-repository.perpus.iainsalatiga.ac.id/16484
http://e-repository.perpus.iainsalatiga.ac.id/16047
http://e-repository.perpus.iainsalatiga.ac.id/16204