http://e-repository.perpus.iainsalatiga.ac.id/17066
http://e-repository.perpus.iainsalatiga.ac.id/15917
http://e-repository.perpus.iainsalatiga.ac.id/17381
http://e-repository.perpus.iainsalatiga.ac.id/17457
http://e-repository.perpus.iainsalatiga.ac.id/17188