Alahdal, A. y Hassan Al-Ahdal, A. A. M. (2019) «Effectiveness of Collaborative Learning as a Strategy in the Teaching of EFL», Opción, 350, pp. 1026-1043. Disponible en: https://www.produccioncientificaluz.org/index.php/opcion/article/view/24566 (Accedido: 6mayo2024).