http://e-repository.perpus.iainsalatiga.ac.id/15905
http://e-repository.perpus.iainsalatiga.ac.id/11419
http://e-repository.perpus.iainsalatiga.ac.id/8270
http://e-repository.perpus.iainsalatiga.ac.id/8676
http://e-repository.perpus.iainsalatiga.ac.id/8478