http://e-repository.perpus.iainsalatiga.ac.id/9160
http://e-repository.perpus.iainsalatiga.ac.id/9317
http://e-repository.perpus.iainsalatiga.ac.id/9278
http://e-repository.perpus.iainsalatiga.ac.id/9391
http://e-repository.perpus.iainsalatiga.ac.id/9652