R, Ramli, Lulu Laela Amalia, and A.A. Ngurah Yudha Martin Mahardika. “What Frequency Word Level Needed to Have L2 Listening Comprehension”. Social Science Learning Education Journal 3, no. 08 (July 27, 2018): 18–20. Accessed April 18, 2025. http://sslej.in/index.php/sslej/article/view/2276.