http://e-repository.perpus.iainsalatiga.ac.id/11749
http://e-repository.perpus.iainsalatiga.ac.id/11320
http://e-repository.perpus.iainsalatiga.ac.id/10789
http://e-repository.perpus.iainsalatiga.ac.id/10914
http://e-repository.perpus.iainsalatiga.ac.id/10850