León-Flores, C.L. y Vega-Auquilla, M.V. 2021. The use of gammification in the english language classroom to increase vocabulary in beginners (a1 level). EPISTEME KOINONIA. 5, 9 (ene. 2021), 30–55. DOI:https://doi.org/10.35381/e.k.v5i9.1662.