Nguyen, Xuan Tien, and Xuan Truong Le. “The Design and Development of English Writing Courses Based on the Moodle E-Learning Platform: Their Effectiveness”. AsiaCALL Online Journal 7, no. 1 (May 1, 2013). Accessed April 1, 2025. https://asiacall.info/acoj/index.php/journal/article/view/135.