http://e-repository.perpus.iainsalatiga.ac.id/15901
http://e-repository.perpus.iainsalatiga.ac.id/13358
http://e-repository.perpus.iainsalatiga.ac.id/17598
http://e-repository.perpus.iainsalatiga.ac.id/17638
http://e-repository.perpus.iainsalatiga.ac.id/15985