http://e-repository.perpus.iainsalatiga.ac.id/19013
http://e-repository.perpus.iainsalatiga.ac.id/19173
http://e-repository.perpus.iainsalatiga.ac.id/19655
http://e-repository.perpus.iainsalatiga.ac.id/19262
http://e-repository.perpus.iainsalatiga.ac.id/19479