http://e-repository.perpus.iainsalatiga.ac.id/8442
http://e-repository.perpus.iainsalatiga.ac.id/10352
http://e-repository.perpus.iainsalatiga.ac.id/10329
http://e-repository.perpus.iainsalatiga.ac.id/9688
http://e-repository.perpus.iainsalatiga.ac.id/9315