HAMDANI, D.; PURWANTO; SUKORIYANTO; ANWAR, L. Causes of proof construction failure in proof by contradiction. Journal on Mathematics Education, [S. l.], v. 14, n. 3, p. 415–448, 2023. DOI: 10.22342/jme.v14i3.pp415-448. Disponível em: http://jme.ejournal.unsri.ac.id/index.php/jme/article/view/308. Acesso em: 22 nov. 2024.