PETCHARAT, N.; PHOOCHAROENSIL, S. A Corpus-Based Study of English Synonyms: Appropriate, Proper, and Suitable. LEARN Journal: Language Education and Acquisition Research Network, [S. l.], v. 10, n. 2, p. 10–24, 2017. Disponível em: https://so04.tci-thaijo.org/index.php/LEARN/article/view/111700. Acesso em: 17 sep. 2026.