http://e-repository.perpus.iainsalatiga.ac.id/11719
http://e-repository.perpus.iainsalatiga.ac.id/12483
http://e-repository.perpus.iainsalatiga.ac.id/12078
http://e-repository.perpus.iainsalatiga.ac.id/12051
http://e-repository.perpus.iainsalatiga.ac.id/11847