Flores Salvo, Camila, and Matías Jaque Hidalgo. “Negation and Deontic Modals Expressing Obligation in Spanish: The Case of "Deber" And "Tener Que"”. Lexis 48, no. 1 (July 15, 2024): 268-301. Accessed July 16, 2024. https://revistas.pucp.edu.pe/index.php/lexis/article/view/29258.