http://e-repository.perpus.iainsalatiga.ac.id/10531
http://e-repository.perpus.iainsalatiga.ac.id/10638
http://e-repository.perpus.iainsalatiga.ac.id/13784
http://e-repository.perpus.iainsalatiga.ac.id/13646
http://e-repository.perpus.iainsalatiga.ac.id/13267