http://e-repository.perpus.iainsalatiga.ac.id/10703
http://e-repository.perpus.iainsalatiga.ac.id/13914
http://e-repository.perpus.iainsalatiga.ac.id/14068
http://e-repository.perpus.iainsalatiga.ac.id/14595
http://e-repository.perpus.iainsalatiga.ac.id/9297