Fatimah, Dwi, and Siti Ismahani. “Students’ Perception of The Use of Mobile Application Pingolearn in Learning to Speak English”. Cetta: Jurnal Ilmu Pendidikan 8, no. 2 (March 27, 2025): 241–251. Accessed April 7, 2026. https://jayapanguspress.penerbit.org/index.php/cetta/article/view/4130.