http://e-repository.perpus.iainsalatiga.ac.id/10204
http://e-repository.perpus.iainsalatiga.ac.id/11251
http://e-repository.perpus.iainsalatiga.ac.id/11530
http://e-repository.perpus.iainsalatiga.ac.id/11893
http://e-repository.perpus.iainsalatiga.ac.id/12463