http://e-repository.perpus.iainsalatiga.ac.id/16137
http://e-repository.perpus.iainsalatiga.ac.id/15941
http://e-repository.perpus.iainsalatiga.ac.id/17333
http://e-repository.perpus.iainsalatiga.ac.id/17685
http://e-repository.perpus.iainsalatiga.ac.id/17757