http://e-repository.perpus.iainsalatiga.ac.id/9815
http://e-repository.perpus.iainsalatiga.ac.id/9413
http://e-repository.perpus.iainsalatiga.ac.id/9565
http://e-repository.perpus.iainsalatiga.ac.id/9805
http://e-repository.perpus.iainsalatiga.ac.id/9667