Jiamin, Fan, Yang Caixin, and Huang Zheng. “Lexical Richness of Chinese College Students’ Spoken English”. Journal of English Language Teaching and Applied Linguistics 5, no. 2 (March 31, 2023): 01–14. Accessed April 19, 2024. https://al-kindipublisher.com/index.php/jeltal/article/view/5035.