JAYANTA KUMAR DAS. Vocabulary, an Indicator of Language Proficiency: A Perspective from the Review of Literature. Journal of English Language Teaching, Chennai, India, v. 60, n. 6, p. 18–24, 2018. Disponível em: https://journals.eltai.in/jelt/article/view/JELT600606. Acesso em: 17 apr. 2025.