Gazali, A. R. “A Study of the Procedures in Relation to the Contents of Language and Culture in Three Manuals of Education of Spanish As a Foreign Language (ELE)”. Anales De Lingüística, no. 1, Dec. 2014, pp. 47-77, https://revistas.uncu.edu.ar/ojs3/index.php/analeslinguistica/article/view/6343.