http://e-repository.perpus.iainsalatiga.ac.id/14492
http://e-repository.perpus.iainsalatiga.ac.id/14662
http://e-repository.perpus.iainsalatiga.ac.id/14646
http://e-repository.perpus.iainsalatiga.ac.id/14454
http://e-repository.perpus.iainsalatiga.ac.id/14428