Martínez Flor A. The use and function of "please" in learners’ oral requestive behaviour : a pragmatic analysis. J. engl. stud. (Logroño, internet) [Internet]. 2009 May 29 [cited 2024 May 2];7:35-54. Available from: https://publicaciones.unirioja.es/ojs/index.php/jes/article/view/140