http://e-repository.perpus.iainsalatiga.ac.id/9248
http://e-repository.perpus.iainsalatiga.ac.id/9500
http://e-repository.perpus.iainsalatiga.ac.id/9259
http://e-repository.perpus.iainsalatiga.ac.id/9634
http://e-repository.perpus.iainsalatiga.ac.id/9341