http://e-repository.perpus.iainsalatiga.ac.id/15904
http://e-repository.perpus.iainsalatiga.ac.id/17676
http://e-repository.perpus.iainsalatiga.ac.id/17706
http://e-repository.perpus.iainsalatiga.ac.id/17063
http://e-repository.perpus.iainsalatiga.ac.id/18316