http://e-repository.perpus.iainsalatiga.ac.id/18565
http://e-repository.perpus.iainsalatiga.ac.id/18987
http://e-repository.perpus.iainsalatiga.ac.id/19188
http://e-repository.perpus.iainsalatiga.ac.id/18606
http://e-repository.perpus.iainsalatiga.ac.id/17948