Deng, Luying, Helmi Norman, and Khairul Azhar Jamaludin. “Mapping Research on English for Occupational Purposes in Higher Education: Trends and Challenges (2015–2024)”. International Journal of Learning, Teaching and Educational Research 25, no. 5 (May 30, 2026): 756–778. Accessed July 27, 2026. http://ijlter.myres.net/index.php/ijlter/article/view/2874.