http://e-repository.perpus.iainsalatiga.ac.id/10874
http://e-repository.perpus.iainsalatiga.ac.id/10783
http://e-repository.perpus.iainsalatiga.ac.id/11128
http://e-repository.perpus.iainsalatiga.ac.id/10728
http://e-repository.perpus.iainsalatiga.ac.id/11322