http://e-repository.perpus.iainsalatiga.ac.id/9934
http://e-repository.perpus.iainsalatiga.ac.id/9202
http://e-repository.perpus.iainsalatiga.ac.id/9990
http://e-repository.perpus.iainsalatiga.ac.id/10057
http://e-repository.perpus.iainsalatiga.ac.id/9858