http://e-repository.perpus.iainsalatiga.ac.id/14325
http://e-repository.perpus.iainsalatiga.ac.id/14527
http://e-repository.perpus.iainsalatiga.ac.id/17639
http://e-repository.perpus.iainsalatiga.ac.id/17767
http://e-repository.perpus.iainsalatiga.ac.id/19257