http://e-repository.perpus.iainsalatiga.ac.id/18789
http://e-repository.perpus.iainsalatiga.ac.id/18319
http://e-repository.perpus.iainsalatiga.ac.id/18349
http://e-repository.perpus.iainsalatiga.ac.id/19366
http://e-repository.perpus.iainsalatiga.ac.id/19053