http://e-repository.perpus.iainsalatiga.ac.id/14687
http://e-repository.perpus.iainsalatiga.ac.id/14858
http://e-repository.perpus.iainsalatiga.ac.id/14782
http://e-repository.perpus.iainsalatiga.ac.id/14862
http://e-repository.perpus.iainsalatiga.ac.id/14633