G. Calderón Guerrero and B. Soto Martínez, “The different meanings of the particle in in Spanish”., URP, vol. 3, no. 9, pp. 69–75, Dec. 2006, Accessed: Nov. 13, 2026. [Online]. Available: http://www.revistauaricha.umich.mx/index.php/urp/article/view/388