http://e-repository.perpus.iainsalatiga.ac.id/9282
http://e-repository.perpus.iainsalatiga.ac.id/9334
http://e-repository.perpus.iainsalatiga.ac.id/9561
http://e-repository.perpus.iainsalatiga.ac.id/9673
http://e-repository.perpus.iainsalatiga.ac.id/10064