http://e-repository.perpus.iainsalatiga.ac.id/10638
http://e-repository.perpus.iainsalatiga.ac.id/10531
http://e-repository.perpus.iainsalatiga.ac.id/9100
http://e-repository.perpus.iainsalatiga.ac.id/9081
http://e-repository.perpus.iainsalatiga.ac.id/9077