http://e-repository.perpus.iainsalatiga.ac.id/8725
http://e-repository.perpus.iainsalatiga.ac.id/8547
http://e-repository.perpus.iainsalatiga.ac.id/8395
http://e-repository.perpus.iainsalatiga.ac.id/8698
http://e-repository.perpus.iainsalatiga.ac.id/8507