LASTRES-LÓPEZ, Cristina. Exploring if/whether variation in subordinate interrogatives1. Nordic Journal of English Studies, [S. l.], v. 17, n. 2, p. 156–181, 2018. DOI: 10.35360/njes.437. Disponível em: https://publicera.kb.se/njes/article/view/26161. Acesso em: 1 sep. 2024.