http://e-repository.perpus.iainsalatiga.ac.id/17619
http://e-repository.perpus.iainsalatiga.ac.id/17515
http://e-repository.perpus.iainsalatiga.ac.id/11957
http://e-repository.perpus.iainsalatiga.ac.id/15911
http://e-repository.perpus.iainsalatiga.ac.id/15931