http://e-repository.perpus.iainsalatiga.ac.id/14781
http://e-repository.perpus.iainsalatiga.ac.id/14803
http://e-repository.perpus.iainsalatiga.ac.id/14850
http://e-repository.perpus.iainsalatiga.ac.id/13883
http://e-repository.perpus.iainsalatiga.ac.id/13962