Belinda Marie Balraj, Enock Amalanathan,. «Collaborating 4Cs Framework Model and Case Study-Based Learning for Enhancing Language Competence». Opción 340 (junio 12, 2019): 807-824. Accedido abril 28, 2024. https://produccioncientificaluz.org/index.php/opcion/article/view/24322.