1.
Khomariyah Y, Ekowijayanto M. Duolingo As a Digital Tool for Enhancing English As a Foreign Language (EFL) Speaking Proficiency at Zain Academy. RIGGS [Internet]. 2025 Jul. 22 [cited 2026 Apr. 17];4(2):6482-9. Available from: https://journal.ilmudata.co.id/index.php/RIGGS/article/view/1670