Kurniah P, S. A., Rusliana, Tanasy, N., Purwanto, J., & Aisyah. (2026). English Vocabulary Size of Second-Semester Students at Universitas Indonesia Timur: A Diagnostic Study Based on Paul Nation’s Vocabulary Size Framework. IJESS International Journal of Education and Social Science, 7(1), 156–164. https://doi.org/10.56371/ijess.v7i1.706