ALLEN, John Robin. The Ghost in the Machine: Generating Error Messages in Computer Assisted Language Learning Programs. CALICO Journal, [S. l.], v. 13, n. 2-3, p. 87–103, 2013. DOI: 10.1558/cj.v13i2-3.87-103. Disponível em: https://journal.equinoxpub.com/Calico/article/view/16400.. Acesso em: 16 jul. 2024.