http://e-repository.perpus.iainsalatiga.ac.id/11888
http://e-repository.perpus.iainsalatiga.ac.id/12495
http://e-repository.perpus.iainsalatiga.ac.id/12771
http://e-repository.perpus.iainsalatiga.ac.id/12816
http://e-repository.perpus.iainsalatiga.ac.id/13071