http://e-repository.perpus.iainsalatiga.ac.id/9759
http://e-repository.perpus.iainsalatiga.ac.id/10295
http://e-repository.perpus.iainsalatiga.ac.id/10464
http://e-repository.perpus.iainsalatiga.ac.id/10922
http://e-repository.perpus.iainsalatiga.ac.id/11079