http://e-repository.perpus.iainsalatiga.ac.id/17774
http://e-repository.perpus.iainsalatiga.ac.id/15642
http://e-repository.perpus.iainsalatiga.ac.id/17905
http://e-repository.perpus.iainsalatiga.ac.id/12486
http://e-repository.perpus.iainsalatiga.ac.id/19057