http://e-repository.perpus.iainsalatiga.ac.id/11703
http://e-repository.perpus.iainsalatiga.ac.id/10908
http://e-repository.perpus.iainsalatiga.ac.id/12791
http://e-repository.perpus.iainsalatiga.ac.id/13868
http://e-repository.perpus.iainsalatiga.ac.id/19480