http://e-repository.perpus.iainsalatiga.ac.id/9686
http://e-repository.perpus.iainsalatiga.ac.id/10440
http://e-repository.perpus.iainsalatiga.ac.id/10608
http://e-repository.perpus.iainsalatiga.ac.id/10550
http://e-repository.perpus.iainsalatiga.ac.id/12062