http://e-repository.perpus.iainsalatiga.ac.id/12481
http://e-repository.perpus.iainsalatiga.ac.id/11777
http://e-repository.perpus.iainsalatiga.ac.id/11675
http://e-repository.perpus.iainsalatiga.ac.id/11702
http://e-repository.perpus.iainsalatiga.ac.id/12120