Tangsakul, Sivakorn. “Relationship Between Vocabulary Size and TOEIC Reading Achievement Among Undergraduate Students”. International Journal of Sociologies and Anthropologies Science Reviews 4, no. 4 (August 22, 2024): 305–312. accessed December 8, 2025. https://so07.tci-thaijo.org/index.php/IJSASR/article/view/3896.