Nafisah BZ, Hadi MW, Yani M, Tafaa T. Exploring Duolinggo and Babbel Mobile Applications in Improving EFL Slow Learners’ Speaking Performance: A Classroom Action Research. JLMLL. 2026;1(1):32-44. Accessed May 2, 2026. https://balejurnal.com/index.php/JLMLL/article/view/72