http://e-repository.perpus.iainsalatiga.ac.id/10415
http://e-repository.perpus.iainsalatiga.ac.id/10400
http://e-repository.perpus.iainsalatiga.ac.id/10604
http://e-repository.perpus.iainsalatiga.ac.id/10427
http://e-repository.perpus.iainsalatiga.ac.id/9590