ORESNIK, Janez. Natural syntax : English interrogative main clauses. Linguistica, Ljubljana, SI, v. 47, n. 1, p. 35–48, 2007. DOI: 10.4312/linguistica.47.1.35-48. Disponível em: https://journals.uni-lj.si/linguistica/article/view/3497. Acesso em: 22 jun. 2025.