http://e-repository.perpus.iainsalatiga.ac.id/13511
http://e-repository.perpus.iainsalatiga.ac.id/13116
http://e-repository.perpus.iainsalatiga.ac.id/12893
http://e-repository.perpus.iainsalatiga.ac.id/12884
http://e-repository.perpus.iainsalatiga.ac.id/10660