Serrano Romero EC. Natural Approach or Cognitive Approach. Learning or Acquiring a Foreign Language? Research Study at Centro de Lenguas de la Universidad Autónoma de Ciudad Juárez. revHUMAN [Internet]. 2019 Oct. 31 [cited 2024 Sep. 21];1:49-58. Available from: https://ojs.bdtopten.com/karim/index.php/revHUMAN/article/view/2763