Suny, Ismail, and Siti Partini Suardiman. “Is Modelling Technique Effective to Improve Achievement Motivation of Junior High School Students?”. KnE Social Sciences 3, no. 17 (June 30, 2019): 423–429. Accessed April 28, 2024. https://knepublishing.com/index.php/KnE-Social/article/view/4667.