EVILIYANIDA. PEMECAHAN MASALAH MATEMATIKA. Visipena, [S. l.], v. 1, n. 2, p. 10–17, 2010. DOI: 10.46244/visipena.v1i2.26. Disponível em: https://ejournal.bbg.ac.id/index.php/visipena/article/view/26. Acesso em: 23 jun. 2026.