http://e-repository.perpus.iainsalatiga.ac.id/9838
http://e-repository.perpus.iainsalatiga.ac.id/9590
http://e-repository.perpus.iainsalatiga.ac.id/9126
http://e-repository.perpus.iainsalatiga.ac.id/10644
http://e-repository.perpus.iainsalatiga.ac.id/10654