http://e-repository.perpus.iainsalatiga.ac.id/10922
http://e-repository.perpus.iainsalatiga.ac.id/10285
http://e-repository.perpus.iainsalatiga.ac.id/10634
http://e-repository.perpus.iainsalatiga.ac.id/10164
http://e-repository.perpus.iainsalatiga.ac.id/9910