http://e-repository.perpus.iainsalatiga.ac.id/9686
http://e-repository.perpus.iainsalatiga.ac.id/10225
http://e-repository.perpus.iainsalatiga.ac.id/10179
http://e-repository.perpus.iainsalatiga.ac.id/10388
http://e-repository.perpus.iainsalatiga.ac.id/9761