Valdivieso-Arcos GS, Argudo-Serrano JC. Improving EFL students’ speaking skill through academic oral expression tasks at the high school level. E.K [Internet]. 1 de enero de 2022 [citado 25 de abril de 2026];5(9):56-77. Disponible en: https://www.ojs.fundacionkoinonia.com.ve/index.php/epistemekoinonia/article/view/1663