http://e-repository.perpus.iainsalatiga.ac.id/11296
http://e-repository.perpus.iainsalatiga.ac.id/12544
http://e-repository.perpus.iainsalatiga.ac.id/13086
http://e-repository.perpus.iainsalatiga.ac.id/13825
http://e-repository.perpus.iainsalatiga.ac.id/13936