http://e-repository.perpus.iainsalatiga.ac.id/11083
http://e-repository.perpus.iainsalatiga.ac.id/11017
http://e-repository.perpus.iainsalatiga.ac.id/10859
http://e-repository.perpus.iainsalatiga.ac.id/11027
http://e-repository.perpus.iainsalatiga.ac.id/11791