Nirmala, Nirna, Ashri Shollina, and Muhammad Zen Masruri. “SEVEN FACTORS INFLUENCING LANGUAGE LEARNER SYSTEMS”. JIPIS 26, no. 2 (May 5, 2018): 48–55. Accessed July 3, 2024. https://ejournal.unis.ac.id/index.php/JIPIS/article/view/95.