http://e-repository.perpus.iainsalatiga.ac.id/14857
http://e-repository.perpus.iainsalatiga.ac.id/15123
http://e-repository.perpus.iainsalatiga.ac.id/13953
http://e-repository.perpus.iainsalatiga.ac.id/14295
http://e-repository.perpus.iainsalatiga.ac.id/14373