http://e-repository.perpus.iainsalatiga.ac.id/18987
http://e-repository.perpus.iainsalatiga.ac.id/17905
http://e-repository.perpus.iainsalatiga.ac.id/17948
http://e-repository.perpus.iainsalatiga.ac.id/19999
http://e-repository.perpus.iainsalatiga.ac.id/20042