PRAMASDYAHSARI, A. S.; SETYAWATI, R. D.; ALBAB, I. U. Connecting university mathematics and school mathematics to address Klein’s double discontinuity: A case of ring theory. Beta: Jurnal Tadris Matematika, [S. l.], v. 12, n. 2, p. 122–132, 2019. DOI: 10.20414/betajtm.v12i2.336. Disponível em: https://mail.jurnalbeta.ac.id/index.php/betaJTM/article/view/336. Acesso em: 17 apr. 2026.