García Laborda, J., M. B. Díez-Bedmar, E. Martín Monje, and M. Fernández Álvarez. “Differences and Similarities Between Oral and Written Competence in Spanish Pre-University Students: A Correlational Study”. Onomázein, no. 42, Dec. 2018, pp. 172-96, doi:10.7764/onomazein.42.05.