BOYD-BOWMAN, P. Stanley Martin Sapon, A study of the development of the interrogative in Spanish from the twelfth through the fifteenth centuries. Columbus, Ohio, 1951. 99 págs. Nueva Revista de Filología Hispánica (NRFH), [S. l.], v. 5, n. 4, p. 430–431, 2007. DOI: 10.24201/nrfh.v5i4.3358. Disponível em: https://nrfh.colmex.mx/index.php/nrfh/article/view/3358. Acesso em: 25 abr. 2024.