Question Generator System of Sentence Completion in TOEFL Using NLP and K-Nearest Neighbor. Indonesian Journal of Science and Technology, [S. l.], v. 4, n. 2, p. 294–311, 2019. Disponível em: https://ijost.upi.edu/index.php/ijost/article/view/220. Acesso em: 7 jun. 2026.