http://e-repository.perpus.iainsalatiga.ac.id/13906
http://e-repository.perpus.iainsalatiga.ac.id/14466
http://e-repository.perpus.iainsalatiga.ac.id/15201
http://e-repository.perpus.iainsalatiga.ac.id/15198
http://e-repository.perpus.iainsalatiga.ac.id/15149