http://e-repository.perpus.iainsalatiga.ac.id/13719
http://e-repository.perpus.iainsalatiga.ac.id/13790
http://e-repository.perpus.iainsalatiga.ac.id/15168
http://e-repository.perpus.iainsalatiga.ac.id/15379
http://e-repository.perpus.iainsalatiga.ac.id/17464