http://e-repository.perpus.iainsalatiga.ac.id/15917
http://e-repository.perpus.iainsalatiga.ac.id/12459
http://e-repository.perpus.iainsalatiga.ac.id/17582
http://e-repository.perpus.iainsalatiga.ac.id/17505
http://e-repository.perpus.iainsalatiga.ac.id/17391