http://e-repository.perpus.iainsalatiga.ac.id/17403
http://e-repository.perpus.iainsalatiga.ac.id/17460
http://e-repository.perpus.iainsalatiga.ac.id/17464
http://e-repository.perpus.iainsalatiga.ac.id/17665
http://e-repository.perpus.iainsalatiga.ac.id/17510