http://e-repository.perpus.iainsalatiga.ac.id/17791
http://e-repository.perpus.iainsalatiga.ac.id/17337
http://e-repository.perpus.iainsalatiga.ac.id/17215
http://e-repository.perpus.iainsalatiga.ac.id/16666
http://e-repository.perpus.iainsalatiga.ac.id/18010