Gómez Araquistain, María Teresa, and Ignacio Vázquez Orta. “The Function of Presupposition and Focalisation in Understanding Active and Passive Sentences”. Miscelánea: A Journal of English and American Studies, vol. 8, Jan. 1987, pp. 61-70, https://doi.org/10.26754/ojs_misc/mj.198712373.