http://e-repository.perpus.iainsalatiga.ac.id/18963
http://e-repository.perpus.iainsalatiga.ac.id/19003
http://e-repository.perpus.iainsalatiga.ac.id/19178
http://e-repository.perpus.iainsalatiga.ac.id/19057
http://e-repository.perpus.iainsalatiga.ac.id/19459