http://e-repository.perpus.iainsalatiga.ac.id/19173
http://e-repository.perpus.iainsalatiga.ac.id/19467
http://e-repository.perpus.iainsalatiga.ac.id/19262
http://e-repository.perpus.iainsalatiga.ac.id/19826
http://e-repository.perpus.iainsalatiga.ac.id/19693