http://e-repository.perpus.iainsalatiga.ac.id/15820
http://e-repository.perpus.iainsalatiga.ac.id/13336
http://e-repository.perpus.iainsalatiga.ac.id/11738
http://e-repository.perpus.iainsalatiga.ac.id/13440
http://e-repository.perpus.iainsalatiga.ac.id/13351