LEÓN-FLORES, C. L.; VEGA-AUQUILLA, M. V. The use of gammification in the english language classroom to increase vocabulary in beginners (a1 level). EPISTEME KOINONIA, [S. l.], v. 5, n. 9, p. 30–55, 2021. DOI: 10.35381/e.k.v5i9.1662. Disponível em: https://www.fundacionkoinonia.com.ve/ojs/index.php/epistemekoinonia/article/view/1662. Acesso em: 28 oct. 2025.