http://e-repository.perpus.iainsalatiga.ac.id/8450
http://e-repository.perpus.iainsalatiga.ac.id/8254
http://e-repository.perpus.iainsalatiga.ac.id/8461
http://e-repository.perpus.iainsalatiga.ac.id/8597
http://e-repository.perpus.iainsalatiga.ac.id/8342