http://e-repository.perpus.iainsalatiga.ac.id/9459
http://e-repository.perpus.iainsalatiga.ac.id/10190
http://e-repository.perpus.iainsalatiga.ac.id/9653
http://e-repository.perpus.iainsalatiga.ac.id/9479
http://e-repository.perpus.iainsalatiga.ac.id/9389