http://e-repository.perpus.iainsalatiga.ac.id/15440
http://e-repository.perpus.iainsalatiga.ac.id/13766
http://e-repository.perpus.iainsalatiga.ac.id/13694
http://e-repository.perpus.iainsalatiga.ac.id/16407
http://e-repository.perpus.iainsalatiga.ac.id/16346