http://e-repository.perpus.iainsalatiga.ac.id/9434
http://e-repository.perpus.iainsalatiga.ac.id/9342
http://e-repository.perpus.iainsalatiga.ac.id/10609
http://e-repository.perpus.iainsalatiga.ac.id/10608
http://e-repository.perpus.iainsalatiga.ac.id/10550