http://e-repository.perpus.iainsalatiga.ac.id/13877
http://e-repository.perpus.iainsalatiga.ac.id/14200
http://e-repository.perpus.iainsalatiga.ac.id/14252
http://e-repository.perpus.iainsalatiga.ac.id/14862
http://e-repository.perpus.iainsalatiga.ac.id/13856