KNIGHT JULIAN, L. Nung balna ampa bungna ya yulka "como surgieron los numeros naturales". Wani, [S. l.], n. 8, p. 24–26, 2024. Disponível em: https://camjol.info/index.php/WANI/article/view/19238. Acesso em: 22 dic. 2024.