http://e-repository.perpus.iainsalatiga.ac.id/9952
http://e-repository.perpus.iainsalatiga.ac.id/10068
http://e-repository.perpus.iainsalatiga.ac.id/8934
http://e-repository.perpus.iainsalatiga.ac.id/9276
http://e-repository.perpus.iainsalatiga.ac.id/9172