Nghi, Tran Tin. “Exploring the Impact of Biological Gender on L1 Negative Transfer in English Preposition Learning: An Explanatory Study”. Journal of Knowledge Learning and Science Technology ISSN: 2959-6386 (online) 2, no. 1 (June 16, 2024): 1–12. Accessed September 21, 2025. https://jklst.org/index.php/home/article/view/9.