http://e-repository.perpus.iainsalatiga.ac.id/9155
http://e-repository.perpus.iainsalatiga.ac.id/9282
http://e-repository.perpus.iainsalatiga.ac.id/9831
http://e-repository.perpus.iainsalatiga.ac.id/9829
http://e-repository.perpus.iainsalatiga.ac.id/9597