http://e-repository.perpus.iainsalatiga.ac.id/19287
http://e-repository.perpus.iainsalatiga.ac.id/19262
http://e-repository.perpus.iainsalatiga.ac.id/19516
http://e-repository.perpus.iainsalatiga.ac.id/19988
http://e-repository.perpus.iainsalatiga.ac.id/20450