http://e-repository.perpus.iainsalatiga.ac.id/10412
http://e-repository.perpus.iainsalatiga.ac.id/10530
http://e-repository.perpus.iainsalatiga.ac.id/10164
http://e-repository.perpus.iainsalatiga.ac.id/10336
http://e-repository.perpus.iainsalatiga.ac.id/10922