NAGATA, N. An Effective Application of Natural Language Processing in Second Language Instruction. CALICO Journal, [S. l.], v. 13, n. 1, p. 47–67, 2013. DOI: 10.1558/cj.v13i1.47-67. Disponível em: https://journal.equinoxpub.com/Calico/article/view/16389. Acesso em: 25 jun. 2022.