http://e-repository.perpus.iainsalatiga.ac.id/8817
http://e-repository.perpus.iainsalatiga.ac.id/8843
http://e-repository.perpus.iainsalatiga.ac.id/8442
http://e-repository.perpus.iainsalatiga.ac.id/9304
http://e-repository.perpus.iainsalatiga.ac.id/9641