http://e-repository.perpus.iainsalatiga.ac.id/17526
http://e-repository.perpus.iainsalatiga.ac.id/17583
http://e-repository.perpus.iainsalatiga.ac.id/17505
http://e-repository.perpus.iainsalatiga.ac.id/14484
http://e-repository.perpus.iainsalatiga.ac.id/14797