http://e-repository.perpus.iainsalatiga.ac.id/12487
http://e-repository.perpus.iainsalatiga.ac.id/12015
http://e-repository.perpus.iainsalatiga.ac.id/12259
http://e-repository.perpus.iainsalatiga.ac.id/12787
http://e-repository.perpus.iainsalatiga.ac.id/12806