http://e-repository.perpus.iainsalatiga.ac.id/11570
http://e-repository.perpus.iainsalatiga.ac.id/11527
http://e-repository.perpus.iainsalatiga.ac.id/11820
http://e-repository.perpus.iainsalatiga.ac.id/11813
http://e-repository.perpus.iainsalatiga.ac.id/12073