http://e-repository.perpus.iainsalatiga.ac.id/19467
http://e-repository.perpus.iainsalatiga.ac.id/20111
http://e-repository.perpus.iainsalatiga.ac.id/19826
http://e-repository.perpus.iainsalatiga.ac.id/19446
http://e-repository.perpus.iainsalatiga.ac.id/19420