Arfah H, Zam AZ. The Contribution of Exposure Frequency to English to Speaking and Writing Performance of EFL Learners at Junior High School in Indonesia. VELES [Internet]. 2017 Sep. 4 [cited 2024 Jul. 22];1(2). Available from: https://e-journal.hamzanwadi.ac.id/index.php/veles/article/view/441