http://e-repository.perpus.iainsalatiga.ac.id/11641
http://e-repository.perpus.iainsalatiga.ac.id/11656
http://e-repository.perpus.iainsalatiga.ac.id/12884
http://e-repository.perpus.iainsalatiga.ac.id/13064
http://e-repository.perpus.iainsalatiga.ac.id/13143