http://e-repository.perpus.iainsalatiga.ac.id/8900
http://e-repository.perpus.iainsalatiga.ac.id/8946
http://e-repository.perpus.iainsalatiga.ac.id/9031
http://e-repository.perpus.iainsalatiga.ac.id/10929
http://e-repository.perpus.iainsalatiga.ac.id/11256