Simamora, Monika Meriana, Sahat Siagian, and Naeklan Simbolon. “Development of Differentiated English Language Learning Multimedia”. Randwick International of Education and Linguistics Science Journal 5, no. 3 (September 24, 2024): 890-906. Accessed February 10, 2026. https://www.randwickresearch.com/index.php/rielsj/article/view/1048.