http://e-repository.perpus.iainsalatiga.ac.id/9628
http://e-repository.perpus.iainsalatiga.ac.id/9679
http://e-repository.perpus.iainsalatiga.ac.id/9413
http://e-repository.perpus.iainsalatiga.ac.id/9565
http://e-repository.perpus.iainsalatiga.ac.id/9895