http://e-repository.perpus.iainsalatiga.ac.id/9565
http://e-repository.perpus.iainsalatiga.ac.id/9850
http://e-repository.perpus.iainsalatiga.ac.id/9861
http://e-repository.perpus.iainsalatiga.ac.id/9759
http://e-repository.perpus.iainsalatiga.ac.id/9214