http://e-repository.perpus.iainsalatiga.ac.id/12540
http://e-repository.perpus.iainsalatiga.ac.id/12730
http://e-repository.perpus.iainsalatiga.ac.id/14198
http://e-repository.perpus.iainsalatiga.ac.id/14240
http://e-repository.perpus.iainsalatiga.ac.id/14306