http://e-repository.perpus.iainsalatiga.ac.id/9071
http://e-repository.perpus.iainsalatiga.ac.id/8946
http://e-repository.perpus.iainsalatiga.ac.id/14454
http://e-repository.perpus.iainsalatiga.ac.id/8814
http://e-repository.perpus.iainsalatiga.ac.id/9015