http://e-repository.perpus.iainsalatiga.ac.id/8900
http://e-repository.perpus.iainsalatiga.ac.id/9077
http://e-repository.perpus.iainsalatiga.ac.id/9120
http://e-repository.perpus.iainsalatiga.ac.id/10442
http://e-repository.perpus.iainsalatiga.ac.id/10379