http://e-repository.perpus.iainsalatiga.ac.id/19467
http://e-repository.perpus.iainsalatiga.ac.id/19929
http://e-repository.perpus.iainsalatiga.ac.id/19777
http://e-repository.perpus.iainsalatiga.ac.id/19826
http://e-repository.perpus.iainsalatiga.ac.id/19624