Rachman, Dzul, and Sunarti . “Mobile Instant Messaging and Its Potential to Reduce Anxiety in English As a Foreign Language Speaking Class”. International Journal of Engineering and Technology 8, no. 1.1 (January 24, 2019): 149–153. Accessed February 25, 2026. https://www.sciencepubco.com/index.php/IJET/article/view/24652.