ORESNIK, J. Natural syntax : English interrogative main clauses. Linguistica, [S. l.], v. 47, n. 1, p. 35–48, 2007. DOI: 10.4312/linguistica.47.1.35-48. Disponível em: https://revije.ff.uni-lj.si/linguistica/article/view/3497. Acesso em: 27 sep. 2021.